Advisories: * MFSA-2020-16 (FF ESR 68.8): https://www.mozilla.org/en-US/security/advisories/mfsa2020-17 * MFSA-2020-17 (FF 76): https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/ * MFSA-2020-18 (TB): https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/