Fake PDF and search tools hijacked searches for 13.4 million Chrome users

2026-10-30T20:51:45Z•61a8c007ddd3a9b429162a187ba82e9199ff44ea5dbbe680e46ab44174dbdfa7
browser-securitychromedata-collectionmalicious-browser-extensionspotentially-unwanted-programprivacy-breachsearch-hijackingsurveillance

What happened

Malwarebytes reports that 319 malicious Chrome extensions disguised as PDF, search, and related tools routed users’ search queries through operator-controlled servers, exposing the searches of approximately 13.4 million users. The campaign represents large-scale browser extension abuse and privacy surveillance, with potential risks including profiling, targeted phishing, and exposure of sensitive queries.

Why it matters

A reviewed impact interpretation has not been published for this record.

Evidence and limitations

Source ID
malwarebytes_labs
Record identifier
61a8c007ddd3a9b429162a187ba82e9199ff44ea5dbbe680e46ab44174dbdfa7
Enrichment time
2026-10-30T20:51:45Z
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.

Record · Fake PDF and search tools hijacked searches for 13.4 million Chrome users · Baitaphish