Patch Tuesday, May 2026 Edition
2026-05-13T13:23:34Z•cdbd17bee30e5328e483e50372d5bd20864da80c736d6e51dbf62c692b1ebf8e
DDoSIoTIranRussiaSIM‑swapScattered‑Spiderauthentication‑token‑theftbotnetbreachcloud‑securitydata‑extortioneducation‑sectorlaw‑enforcement‑takedownpatch‑managementphishingransomwarerouter‑vulnerabilitiesstate‑sponsoredwiperzero‑day
What happened
A collection of KrebsOnSecurity reports (Mar–May 2026) describing multiple high-impact cyber incidents and broad vulnerability remediation activity. Highlights include a large-scale data‑extortion campaign against Canvas that defaced logins and threatened data from ~275 million students and staff across ~9,000 institutions; a Brazilian anti‑DDoS vendor implicated in enabling a botnet used to attack ISPs; guilty plea by a Scattered Spider member for SMS/phishing-enabled intrusions; Russian-linked abuse of known router flaws to harvest Microsoft Office authentication tokens from ~18,000 networks
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- krebs_on_security
- Record identifier
- cdbd17bee30e5328e483e50372d5bd20864da80c736d6e51dbf62c692b1ebf8e
- Enrichment time
- 2026-05-13T13:23:34Z
- 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.