diff --git a/package.json b/package.json
index 82ec05f81a5..b203cf51e91 100644
--- a/package.json
+++ b/package.json
@@ -111,6 +111,7 @@
     "react-focus-lock": "^2.5.1",
     "react-transition-group": "^4.4.1",
     "rfc4648": "^1.4.0",
+    "sanitize-filename": "^1.6.3",
     "sanitize-html": "^2.3.2",
     "tar-js": "^0.3.0",
     "ua-parser-js": "^1.0.2",
diff --git a/src/DateUtils.ts b/src/DateUtils.ts
index 20227354f02..2b50bddb858 100644
--- a/src/DateUtils.ts
+++ b/src/DateUtils.ts
@@ -1,6 +1,7 @@
 /*
 Copyright 2015, 2016 OpenMarket Ltd
 Copyright 2017 Vector Creations Ltd
+Copyright 2022 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -177,6 +178,16 @@ export function formatFullDateNoDay(date: Date) {
     });
 }
 
+/**
+ * Returns an ISO date string without textual description of the date (ie: no "Wednesday" or
+ * similar)
+ * @param date The date to format.
+ * @returns The date string in ISO format.
+ */
+export function formatFullDateNoDayISO(date: Date): string {
+    return date.toISOString();
+}
+
 export function formatFullDateNoDayNoTime(date: Date) {
     return (
         date.getFullYear() +
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index fa0b1690dcf..ca804ea50bd 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -756,6 +756,7 @@
     "Zoom in": "Zoom in",
     "Zoom out": "Zoom out",
     "Are you sure you want to exit during this export?": "Are you sure you want to exit during this export?",
+    "Unnamed Room": "Unnamed Room",
     "Generating a ZIP": "Generating a ZIP",
     "Fetched %(count)s events out of %(total)s|other": "Fetched %(count)s events out of %(total)s",
     "Fetched %(count)s events out of %(total)s|one": "Fetched %(count)s event out of %(total)s",
@@ -2768,7 +2769,6 @@
     "Or send invite link": "Or send invite link",
     "Unnamed Space": "Unnamed Space",
     "Invite to %(roomName)s": "Invite to %(roomName)s",
-    "Unnamed Room": "Unnamed Room",
     "Invite someone using their name, email address, username (like <userId/>) or <a>share this space</a>.": "Invite someone using their name, email address, username (like <userId/>) or <a>share this space</a>.",
     "Invite someone using their name, username (like <userId/>) or <a>share this space</a>.": "Invite someone using their name, username (like <userId/>) or <a>share this space</a>.",
     "Invite someone using their name, email address, username (like <userId/>) or <a>share this room</a>.": "Invite someone using their name, email address, username (like <userId/>) or <a>share this room</a>.",
diff --git a/src/utils/exportUtils/Exporter.ts b/src/utils/exportUtils/Exporter.ts
index 7f7f57f92ef..ec20f395e32 100644
--- a/src/utils/exportUtils/Exporter.ts
+++ b/src/utils/exportUtils/Exporter.ts
@@ -1,5 +1,5 @@
 /*
-Copyright 2021 The Matrix.org Foundation C.I.C.
+Copyright 2021 - 2022 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -20,12 +20,13 @@ import { MatrixClient } from "matrix-js-sdk/src/client";
 import { Direction } from "matrix-js-sdk/src/models/event-timeline";
 import { saveAs } from "file-saver";
 import { logger } from "matrix-js-sdk/src/logger";
+import sanitizeFilename from "sanitize-filename";
 
 import { MatrixClientPeg } from "../../MatrixClientPeg";
 import { ExportType, IExportOptions } from "./exportUtils";
 import { decryptFile } from "../DecryptFile";
 import { mediaFromContent } from "../../customisations/Media";
-import { formatFullDateNoDay } from "../../DateUtils";
+import { formatFullDateNoDay, formatFullDateNoDayISO } from "../../DateUtils";
 import { isVoiceMessage } from "../EventUtils";
 import { IMediaEventContent } from "../../customisations/models/IMediaEventContent";
 import { _t } from "../../languageHandler";
@@ -57,6 +58,10 @@ export default abstract class Exporter {
         window.addEventListener("beforeunload", this.onBeforeUnload);
     }
 
+    public get destinationFileName(): string {
+        return this.makeFileNameNoExtension(SdkConfig.get().brand) + ".zip";
+    }
+
     protected onBeforeUnload(e: BeforeUnloadEvent): string {
         e.preventDefault();
         return e.returnValue = _t("Are you sure you want to exit during this export?");
@@ -75,10 +80,19 @@ export default abstract class Exporter {
         this.files.push(file);
     }
 
+    protected makeFileNameNoExtension(brand = "matrix"): string {
+        // First try to use the real name of the room, then a translated copy of a generic name,
+        // then finally hardcoded default to guarantee we'll have a name.
+        const safeRoomName = sanitizeFilename(this.room.name ?? _t("Unnamed Room")).trim() || "Unnamed Room";
+        const safeDate = formatFullDateNoDayISO(new Date())
+            .replace(/:/g, '-'); // ISO format automatically removes a lot of stuff for us
+        const safeBrand = sanitizeFilename(brand);
+        return `${safeBrand} - ${safeRoomName} - Chat Export - ${safeDate}`;
+    }
+
     protected async downloadZIP(): Promise<string | void> {
-        const brand = SdkConfig.get().brand;
-        const filenameWithoutExt = `${brand} - Chat Export - ${formatFullDateNoDay(new Date())}`;
-        const filename = `${filenameWithoutExt}.zip`;
+        const filename = this.destinationFileName;
+        const filenameWithoutExt = filename.substring(0, filename.length - 4); // take off the .zip
         const { default: JSZip } = await import('jszip');
 
         const zip = new JSZip();
diff --git a/src/utils/exportUtils/JSONExport.ts b/src/utils/exportUtils/JSONExport.ts
index b0b4b330b06..a0dc5e036e6 100644
--- a/src/utils/exportUtils/JSONExport.ts
+++ b/src/utils/exportUtils/JSONExport.ts
@@ -1,5 +1,5 @@
 /*
-Copyright 2021 The Matrix.org Foundation C.I.C.
+Copyright 2021 - 2022 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -20,7 +20,7 @@ import { EventType } from "matrix-js-sdk/src/@types/event";
 import { logger } from "matrix-js-sdk/src/logger";
 
 import Exporter from "./Exporter";
-import { formatFullDateNoDay, formatFullDateNoDayNoTime } from "../../DateUtils";
+import { formatFullDateNoDayNoTime } from "../../DateUtils";
 import { ExportType, IExportOptions } from "./exportUtils";
 import { _t } from "../../languageHandler";
 import { haveRendererForEvent } from "../../events/EventTileFactory";
@@ -38,6 +38,10 @@ export default class JSONExporter extends Exporter {
         super(room, exportType, exportOptions, setProgressText);
     }
 
+    public get destinationFileName(): string {
+        return this.makeFileNameNoExtension() + ".json";
+    }
+
     protected createJSONString(): string {
         const exportDate = formatFullDateNoDayNoTime(new Date());
         const creator = this.room.currentState.getStateEvents(EventType.RoomCreate, "")?.getSender();
@@ -108,7 +112,7 @@ export default class JSONExporter extends Exporter {
             this.addFile("export.json", new Blob([text]));
             await this.downloadZIP();
         } else {
-            const fileName = `matrix-export-${formatFullDateNoDay(new Date())}.json`;
+            const fileName = this.destinationFileName;
             this.downloadPlainText(fileName, text);
         }
 
diff --git a/src/utils/exportUtils/PlainTextExport.ts b/src/utils/exportUtils/PlainTextExport.ts
index cc4cad18947..3150b15c642 100644
--- a/src/utils/exportUtils/PlainTextExport.ts
+++ b/src/utils/exportUtils/PlainTextExport.ts
@@ -1,5 +1,5 @@
 /*
-Copyright 2021 The Matrix.org Foundation C.I.C.
+Copyright 2021 - 2022 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -20,7 +20,6 @@ import { logger } from "matrix-js-sdk/src/logger";
 import React from "react";
 
 import Exporter from "./Exporter";
-import { formatFullDateNoDay } from "../../DateUtils";
 import { _t } from "../../languageHandler";
 import { ExportType, IExportOptions } from "./exportUtils";
 import { textForEvent } from "../../TextForEvent";
@@ -43,6 +42,10 @@ export default class PlainTextExporter extends Exporter {
             : _t("Media omitted - file size limit exceeded");
     }
 
+    public get destinationFileName(): string {
+        return this.makeFileNameNoExtension() + ".txt";
+    }
+
     public textForReplyEvent = (content: IContent) => {
         const REPLY_REGEX = /> <(.*?)>(.*?)\n\n(.*)/s;
         const REPLY_SOURCE_MAX_LENGTH = 32;
@@ -137,7 +140,7 @@ export default class PlainTextExporter extends Exporter {
             this.addFile("export.txt", new Blob([text]));
             await this.downloadZIP();
         } else {
-            const fileName = `matrix-export-${formatFullDateNoDay(new Date())}.txt`;
+            const fileName = this.destinationFileName;
             this.downloadPlainText(fileName, text);
         }
 
diff --git a/test/test-utils/date.ts b/test/test-utils/date.ts
new file mode 100644
index 00000000000..c3010b2ae94
--- /dev/null
+++ b/test/test-utils/date.ts
@@ -0,0 +1,17 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+export const REPEATABLE_DATE = new Date(2022, 10, 17, 16, 58, 32, 517);
diff --git a/test/test-utils/index.ts b/test/test-utils/index.ts
index 959b41352b9..2fa87e1e678 100644
--- a/test/test-utils/index.ts
+++ b/test/test-utils/index.ts
@@ -24,3 +24,4 @@ export * from './test-utils';
 export * from './call';
 export * from './wrappers';
 export * from './utilities';
+export * from './date';
diff --git a/test/utils/DateUtils-test.ts b/test/utils/DateUtils-test.ts
index 7804fd6e9cf..784be85ea7e 100644
--- a/test/utils/DateUtils-test.ts
+++ b/test/utils/DateUtils-test.ts
@@ -14,7 +14,8 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import { formatSeconds, formatRelativeTime, formatDuration } from "../../src/DateUtils";
+import { formatSeconds, formatRelativeTime, formatDuration, formatFullDateNoDayISO } from "../../src/DateUtils";
+import { REPEATABLE_DATE } from "../test-utils";
 
 describe("formatSeconds", () => {
     it("correctly formats time with hours", () => {
@@ -92,3 +93,9 @@ describe('formatDuration()', () => {
         expect(formatDuration(input)).toEqual(expectedResult);
     });
 });
+
+describe("formatFullDateNoDayISO", () => {
+    it("should return ISO format", () => {
+        expect(formatFullDateNoDayISO(REPEATABLE_DATE)).toEqual("2022-11-17T16:58:32.517Z");
+    });
+});
diff --git a/test/utils/exportUtils/HTMLExport-test.ts b/test/utils/exportUtils/HTMLExport-test.ts
new file mode 100644
index 00000000000..e009205d8d1
--- /dev/null
+++ b/test/utils/exportUtils/HTMLExport-test.ts
@@ -0,0 +1,52 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { mocked } from "jest-mock";
+
+import { createTestClient, mkStubRoom, REPEATABLE_DATE } from "../../test-utils";
+import { ExportType, IExportOptions } from "../../../src/utils/exportUtils/exportUtils";
+import SdkConfig from "../../../src/SdkConfig";
+import HTMLExporter from "../../../src/utils/exportUtils/HtmlExport";
+
+describe("HTMLExport", () => {
+    beforeEach(() => {
+        jest.useFakeTimers('modern');
+        jest.setSystemTime(REPEATABLE_DATE);
+    });
+
+    afterEach(() => {
+        mocked(SdkConfig.get).mockRestore();
+    });
+
+    it("should have an SDK-branded destination file name", () => {
+        const roomName = "My / Test / Room: Welcome";
+        const client = createTestClient();
+        const stubOptions: IExportOptions = {
+            attachmentsIncluded: false,
+            maxSize: 50000000,
+        };
+        const stubRoom = mkStubRoom("!myroom:example.org", roomName, client);
+        const exporter = new HTMLExporter(stubRoom, ExportType.Timeline, stubOptions, () => {});
+
+        expect(exporter.destinationFileName).toMatchSnapshot();
+
+        jest.spyOn(SdkConfig, "get").mockImplementation(() => {
+            return { brand: "BrandedChat/WithSlashes/ForFun" };
+        });
+
+        expect(exporter.destinationFileName).toMatchSnapshot();
+    });
+});
diff --git a/test/utils/exportUtils/JSONExport-test.ts b/test/utils/exportUtils/JSONExport-test.ts
new file mode 100644
index 00000000000..3f161a23ea2
--- /dev/null
+++ b/test/utils/exportUtils/JSONExport-test.ts
@@ -0,0 +1,39 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import JSONExporter from "../../../src/utils/exportUtils/JSONExport";
+import { createTestClient, mkStubRoom, REPEATABLE_DATE } from "../../test-utils";
+import { ExportType, IExportOptions } from "../../../src/utils/exportUtils/exportUtils";
+
+describe("JSONExport", () => {
+    beforeEach(() => {
+        jest.useFakeTimers('modern');
+        jest.setSystemTime(REPEATABLE_DATE);
+    });
+
+    it("should have a Matrix-branded destination file name", () => {
+        const roomName = "My / Test / Room: Welcome";
+        const client = createTestClient();
+        const stubOptions: IExportOptions = {
+            attachmentsIncluded: false,
+            maxSize: 50000000,
+        };
+        const stubRoom = mkStubRoom("!myroom:example.org", roomName, client);
+        const exporter = new JSONExporter(stubRoom, ExportType.Timeline, stubOptions, () => {});
+
+        expect(exporter.destinationFileName).toMatchSnapshot();
+    });
+});
diff --git a/test/utils/exportUtils/PlainTextExport-test.ts b/test/utils/exportUtils/PlainTextExport-test.ts
new file mode 100644
index 00000000000..919eb40cfa9
--- /dev/null
+++ b/test/utils/exportUtils/PlainTextExport-test.ts
@@ -0,0 +1,39 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { createTestClient, mkStubRoom, REPEATABLE_DATE } from "../../test-utils";
+import { ExportType, IExportOptions } from "../../../src/utils/exportUtils/exportUtils";
+import PlainTextExporter from "../../../src/utils/exportUtils/PlainTextExport";
+
+describe("PlainTextExport", () => {
+    beforeEach(() => {
+        jest.useFakeTimers('modern');
+        jest.setSystemTime(REPEATABLE_DATE);
+    });
+
+    it("should have a Matrix-branded destination file name", () => {
+        const roomName = "My / Test / Room: Welcome";
+        const client = createTestClient();
+        const stubOptions: IExportOptions = {
+            attachmentsIncluded: false,
+            maxSize: 50000000,
+        };
+        const stubRoom = mkStubRoom("!myroom:example.org", roomName, client);
+        const exporter = new PlainTextExporter(stubRoom, ExportType.Timeline, stubOptions, () => {});
+
+        expect(exporter.destinationFileName).toMatchSnapshot();
+    });
+});
diff --git a/test/utils/exportUtils/__snapshots__/HTMLExport-test.ts.snap b/test/utils/exportUtils/__snapshots__/HTMLExport-test.ts.snap
new file mode 100644
index 00000000000..5cfed9ef902
--- /dev/null
+++ b/test/utils/exportUtils/__snapshots__/HTMLExport-test.ts.snap
@@ -0,0 +1,5 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`HTMLExport should have an SDK-branded destination file name 1`] = `"Element - My  Test  Room Welcome - Chat Export - 2022-11-17T16-58-32.517Z.zip"`;
+
+exports[`HTMLExport should have an SDK-branded destination file name 2`] = `"BrandedChatWithSlashesForFun - My  Test  Room Welcome - Chat Export - 2022-11-17T16-58-32.517Z.zip"`;
diff --git a/test/utils/exportUtils/__snapshots__/JSONExport-test.ts.snap b/test/utils/exportUtils/__snapshots__/JSONExport-test.ts.snap
new file mode 100644
index 00000000000..5f0d78cc58c
--- /dev/null
+++ b/test/utils/exportUtils/__snapshots__/JSONExport-test.ts.snap
@@ -0,0 +1,3 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`JSONExport should have a Matrix-branded destination file name 1`] = `"matrix - My  Test  Room Welcome - Chat Export - 2022-11-17T16-58-32.517Z.json"`;
diff --git a/test/utils/exportUtils/__snapshots__/PlainTextExport-test.ts.snap b/test/utils/exportUtils/__snapshots__/PlainTextExport-test.ts.snap
new file mode 100644
index 00000000000..ebee2957b76
--- /dev/null
+++ b/test/utils/exportUtils/__snapshots__/PlainTextExport-test.ts.snap
@@ -0,0 +1,3 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`PlainTextExport should have a Matrix-branded destination file name 1`] = `"matrix - My  Test  Room Welcome - Chat Export - 2022-11-17T16-58-32.517Z.txt"`;
diff --git a/yarn.lock b/yarn.lock
index ee6ceafdcf3..b54bc1ec815 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2674,7 +2674,7 @@ ajv-keywords@^3.5.2:
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.5.2.tgz#31f29da5ab6e00d1c2d329acf7b5929614d5014d"
   integrity sha512-5p6WTN0DdTGVQk6VjcEju19IgaHudalcfabD7yhDGeA6bcQnmL+CpveLJq/3hvfwd1aof6L386Ougkx6RfyMIQ==
 
-ajv@^6.10.0, ajv@^6.12.3, ajv@^6.12.4, ajv@^6.12.5:
+ajv@^6.10.0, ajv@^6.12.4, ajv@^6.12.5:
   version "6.12.6"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
   integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
@@ -3198,11 +3198,6 @@ browser-process-hrtime@^1.0.0:
   resolved "https://registry.yarnpkg.com/browser-process-hrtime/-/browser-process-hrtime-1.0.0.tgz#3c9b4b7d782c8121e56f10106d84c0d0ffc94626"
   integrity sha512-9o5UecI3GhkpM6DrXr69PblIuWxPKk9Y0jHBRhdocZ2y7YECBFCsHm79Pr3OyR2AvjhDkabFJaDJMYRazHgsow==
 
-browser-request@^0.3.3:
-  version "0.3.3"
-  resolved "https://registry.yarnpkg.com/browser-request/-/browser-request-0.3.3.tgz#9ece5b5aca89a29932242e18bf933def9876cc17"
-  integrity sha512-YyNI4qJJ+piQG6MMEuo7J3Bzaqssufx04zpEKYfSrl/1Op59HWali9zMtBpXnkmqMcOuWJPZvudrm9wISmnCbg==
-
 browserslist@^4.20.2, browserslist@^4.21.3:
   version "4.21.3"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.21.3.tgz#5df277694eb3c48bc5c4b05af3e8b7e09c5a6d1a"
@@ -5285,19 +5280,6 @@ grid-index@^1.1.0:
   resolved "https://registry.yarnpkg.com/grid-index/-/grid-index-1.1.0.tgz#97f8221edec1026c8377b86446a7c71e79522ea7"
   integrity sha512-HZRwumpOGUrHyxO5bqKZL0B0GlUpwtCAzZ42sgxUPniu33R1LSFH5yrIcBCHjkctCAh3mtWKcKd9J4vDDdeVHA==
 
-har-schema@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92"
-  integrity sha512-Oqluz6zhGX8cyRaTQlFMPw80bSJVG2x/cFb8ZPhUILGgHka9SsokCCOQgpveePerqidZOrT14ipqfJb7ILcW5Q==
-
-har-validator@~5.1.3:
-  version "5.1.5"
-  resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-5.1.5.tgz#1f0803b9f8cb20c0fa13822df1ecddb36bde1efd"
-  integrity sha512-nmT2T0lljbxdQZfspsno9hgrG3Uir6Ks5afism62poxqBM6sDnMEuPmzTq8XN0OEwqKLLdh1jQI3qyE66Nzb3w==
-  dependencies:
-    ajv "^6.12.3"
-    har-schema "^2.0.0"
-
 hard-rejection@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/hard-rejection/-/hard-rejection-2.1.0.tgz#1c6eda5c1685c63942766d79bb40ae773cecd883"
@@ -5458,15 +5440,6 @@ http-proxy-agent@^4.0.1:
     agent-base "6"
     debug "4"
 
-http-signature@~1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.2.0.tgz#9aecd925114772f3d95b65a60abb8f7c18fbace1"
-  integrity sha512-CAbnr6Rz4CYQkLYUtSNXxQPUH2gK8f3iWexVlsnMeD+GjlsQ0Xsy1cOX+mN3dtxYomRy21CiOzU8Uhw6OwncEQ==
-  dependencies:
-    assert-plus "^1.0.0"
-    jsprim "^1.2.2"
-    sshpk "^1.7.0"
-
 http-signature@~1.3.6:
   version "1.3.6"
   resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.3.6.tgz#cb6fbfdf86d1c974f343be94e87f7fc128662cf9"
@@ -6695,16 +6668,6 @@ jsonfile@^6.0.1:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
-jsprim@^1.2.2:
-  version "1.4.2"
-  resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.2.tgz#712c65533a15c878ba59e9ed5f0e26d5b77c5feb"
-  integrity sha512-P2bSOMAc/ciLz6DzgjVlGJP9+BrJWu5UDGK70C2iweC5QBIeFf0ZXRvGjEj2uYgrY2MkAAhsSWHDWlFtEroZWw==
-  dependencies:
-    assert-plus "1.0.0"
-    extsprintf "1.3.0"
-    json-schema "0.4.0"
-    verror "1.10.0"
-
 jsprim@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-2.0.2.tgz#77ca23dbcd4135cd364800d22ff82c2185803d4d"
@@ -7070,14 +7033,12 @@ matrix-events-sdk@^0.0.1-beta.7:
   dependencies:
     "@babel/runtime" "^7.12.5"
     another-json "^0.2.0"
-    browser-request "^0.3.3"
     bs58 "^5.0.0"
     content-type "^1.0.4"
     loglevel "^1.7.1"
     matrix-events-sdk "^0.0.1-beta.7"
     p-retry "4"
     qs "^6.9.6"
-    request "^2.88.2"
     unhomoglyph "^1.0.6"
 
 matrix-mock-request@^2.5.0:
@@ -7396,11 +7357,6 @@ nwsapi@^2.2.0:
   resolved "https://registry.yarnpkg.com/nwsapi/-/nwsapi-2.2.1.tgz#10a9f268fbf4c461249ebcfe38e359aa36e2577c"
   integrity sha512-JYOWTeFoS0Z93587vRJgASD5Ut11fYl5NyihP3KrYBvMe1FRRs6RN7m20SA/16GM4P6hTnZjT+UmDOt38UeXNg==
 
-oauth-sign@~0.9.0:
-  version "0.9.0"
-  resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
-  integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
-
 object-assign@^4.1.0, object-assign@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
@@ -8303,32 +8259,6 @@ request-progress@^3.0.0:
   dependencies:
     throttleit "^1.0.0"
 
-request@^2.88.2:
-  version "2.88.2"
-  resolved "https://registry.yarnpkg.com/request/-/request-2.88.2.tgz#d73c918731cb5a87da047e207234146f664d12b3"
-  integrity sha512-MsvtOrfG9ZcrOwAW+Qi+F6HbD0CWXEh9ou77uOb7FM2WPhwT7smM833PzanhJLsgXjN89Ir6V2PczXNnMpwKhw==
-  dependencies:
-    aws-sign2 "~0.7.0"
-    aws4 "^1.8.0"
-    caseless "~0.12.0"
-    combined-stream "~1.0.6"
-    extend "~3.0.2"
-    forever-agent "~0.6.1"
-    form-data "~2.3.2"
-    har-validator "~5.1.3"
-    http-signature "~1.2.0"
-    is-typedarray "~1.0.0"
-    isstream "~0.1.2"
-    json-stringify-safe "~5.0.1"
-    mime-types "~2.1.19"
-    oauth-sign "~0.9.0"
-    performance-now "^2.1.0"
-    qs "~6.5.2"
-    safe-buffer "^5.1.2"
-    tough-cookie "~2.5.0"
-    tunnel-agent "^0.6.0"
-    uuid "^3.3.2"
-
 require-directory@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
@@ -8515,6 +8445,13 @@ sane@^4.0.3:
     minimist "^1.1.1"
     walker "~1.0.5"
 
+sanitize-filename@^1.6.3:
+  version "1.6.3"
+  resolved "https://registry.yarnpkg.com/sanitize-filename/-/sanitize-filename-1.6.3.tgz#755ebd752045931977e30b2025d340d7c9090378"
+  integrity sha512-y/52Mcy7aw3gRm7IrcGDFx/bCk4AhRh2eI9luHOQM86nZsqwiRkkq2GekHXBBD+SmPidc8i2PqtYZl+pWJ8Oeg==
+  dependencies:
+    truncate-utf8-bytes "^1.0.0"
+
 sanitize-html@^2.3.2:
   version "2.7.1"
   resolved "https://registry.yarnpkg.com/sanitize-html/-/sanitize-html-2.7.1.tgz#a6c2c1a88054a79eeacfac9b0a43f1b393476901"
@@ -8788,7 +8725,7 @@ sprintf-js@~1.0.2:
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
   integrity sha512-D9cPgkvLlV3t3IzL0D0YLvGA9Ahk4PcvVwUbN0dSGr1aP0Nrt4AEnTUbuGvquEC0mA64Gqt1fzirlRs5ibXx8g==
 
-sshpk@^1.14.1, sshpk@^1.7.0:
+sshpk@^1.14.1:
   version "1.17.0"
   resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.17.0.tgz#578082d92d4fe612b13007496e543fa0fbcbe4c5"
   integrity sha512-/9HIEs1ZXGhSPE8X6Ccm7Nam1z8KcoCqPdI7ecm1N33EzAetWahvQWVqLZtaZQ+IDKX4IyA2o0gBzqIMkAagHQ==
@@ -9228,6 +9165,13 @@ trim-newlines@^3.0.0:
   resolved "https://registry.yarnpkg.com/trim-newlines/-/trim-newlines-3.0.1.tgz#260a5d962d8b752425b32f3a7db0dcacd176c144"
   integrity sha512-c1PTsA3tYrIsLGkJkzHF+w9F2EyxfXGo4UyJc4pFL++FMjnq0HJS69T3M7d//gKrFKwy429bouPescbjecU+Zw==
 
+truncate-utf8-bytes@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/truncate-utf8-bytes/-/truncate-utf8-bytes-1.0.2.tgz#405923909592d56f78a5818434b0b78489ca5f2b"
+  integrity sha512-95Pu1QXQvruGEhv62XCMO3Mm90GscOCClvrIUwCM0PYOXK3kaF3l3sIHxx71ThJfcbM2O5Au6SO3AWCSEfW4mQ==
+  dependencies:
+    utf8-byte-length "^1.0.1"
+
 tsconfig-paths@^3.14.1:
   version "3.14.1"
   resolved "https://registry.yarnpkg.com/tsconfig-paths/-/tsconfig-paths-3.14.1.tgz#ba0734599e8ea36c862798e920bcf163277b137a"
@@ -9485,16 +9429,16 @@ use@^3.1.0:
   resolved "https://registry.yarnpkg.com/use/-/use-3.1.1.tgz#d50c8cac79a19fbc20f2911f56eb973f4e10070f"
   integrity sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==
 
+utf8-byte-length@^1.0.1:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/utf8-byte-length/-/utf8-byte-length-1.0.4.tgz#f45f150c4c66eee968186505ab93fcbb8ad6bf61"
+  integrity sha512-4+wkEYLBbWxqTahEsWrhxepcoVOJ+1z5PGIjPZxRkytcdSUaNjIjBM7Xn8E+pdSuV7SzvWovBFA54FO0JSoqhA==
+
 util-deprecate@^1.0.2, util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
   integrity sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==
 
-uuid@^3.3.2:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
-  integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
-
 uuid@^8.3.2:
   version "8.3.2"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"