A week in security (May 18 – May 24)
2026-05-25T08:51:56Z•d5befeb7a9de6b6ff28bbcff91d6bc15e5a00a5f39d258ed4388bd1e91a165f1
ai-safetybiometricschromecisa-kevcode-signing-frauddata-exposuredeepfake-sextortionfirefox-151fox-tempesthealthcare-breachjdownloaderknown-exploited-vulnerabilitiesmicrosoft-defendermicrosoft-edgepassword-securitypatch-tuesdayremote-code-executionscamssupply-chain-compromisewebcam-monitoring
What happened
Malwarebytes weekly roundup (May 18–24, 2026) highlighting multiple high-priority incidents and updates: a Chrome update fixing critical remote code execution issues, Microsoft Defender vulnerabilities added to CISA’s Known Exploited Vulnerabilities catalog, supply‑chain compromises including JDownloader installer tampering, a fake malware‑signing service (‘Fox Tempest’) used to issue fraudulent Microsoft-like certificates, a large healthcare breach exposing biometrics and financial/medical data, and important browser security changes (Firefox 151 privacy fixes and Edge password memory changes
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- malwarebytes_labs
- Record identifier
- d5befeb7a9de6b6ff28bbcff91d6bc15e5a00a5f39d258ed4388bd1e91a165f1
- Enrichment time
- 2026-05-25T08:51:56Z
- AI-assisted enrichment
- Yes
This record may overlap with other records. Its enrichment can be incomplete or wrong, and machine assistance was used. Validate consequential decisions against the linked source and your own environment.