Zapier fixes bug chain that researchers say risked widespread account takeover
2026-05-28T14:51:44Z•9427c255772fe1e96d4962a86d86b86e7dd5f3a15bd445e3230876b521226405
account takeoveranthropicapplebotnetcrowdstrikeelection securityfbiglasswormin-person theftkali365law firmsmicrosoft365mythosopen sourceopenaipatchphishingpost-quantumquantum-resistantsilent ransom groupsocial engineeringsoftware flawssupply chainvulnerabilityzapier
What happened
Multiple high-impact cybersecurity developments: Zapier patched a five-step vulnerability chain that researchers said could have allowed an attacker to act as any signed-in user across thousands of connected apps (risk of large-scale account takeover). The FBI issued warnings on multiple fronts — urging U.S. law firms to watch for the Silent Ransom Group, which uses social engineering and in-person access to steal data, and flagging the rapid spread of the Kali365 phishing kit that abuses Microsoft 365 device authorization pages to gain persistent access. CrowdStrike, with Google and Shadowser
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- cyberscoop
- Record identifier
- 9427c255772fe1e96d4962a86d86b86e7dd5f3a15bd445e3230876b521226405
- Enrichment time
- 2026-05-28T14:51:44Z
- 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.