Microsoft to deprecate legacy TLS in Exchange Online starting July
2026-04-28T13:23:35Z•a94c7ac48fb823e254a478ebb07bc2172afdd2e63bbbc6ae46c1ded5c5b6c875
Exchange OnlineGlassWormIMAPIMSI‑catcherMicrosoftOpenVSXOutlook outagePOPPyPI compromiseRDP warningsRemote DesktopRobinhoodSMS blasterSilk TyphoonTLS deprecationaccount creation flawarrestscyberespionagedata breach','ADT','Medtronic','FTC social media scams','deepfakinfostealerlegacy TLSmalicious extensionsphishingre‑authenticationsupply chain
What happened
A collection of security news covering planned Microsoft changes, active supply‑chain and malware campaigns, large data breaches, and evolving social‑engineering threats. Microsoft will begin blocking legacy TLS for POP/IMAP in Exchange Online in July 2026; users and admins must move to modern TLS and updated clients. Multiple supply‑chain attacks and malware campaigns were reported — a PyPI package was hijacked to push an infostealer and 73 malicious OpenVSX extensions (GlassWorm) are acting as sleeper extensions. Large breaches and data exposures include ADT (5.5M records) and Medtronic (al
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- bleepingcomputer
- Record identifier
- a94c7ac48fb823e254a478ebb07bc2172afdd2e63bbbc6ae46c1ded5c5b6c875
- Enrichment time
- 2026-04-28T13:23:35Z
- AI-assisted enrichment
- Yes
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