CYBERSECURITYTRACKER
TRACKING9,129 stories in this site build2,164 vulnerability news stories in this site build
Briefings

Weekly recap: Week of 5 to 11 October 2026

Review the week's tracked stories, vulnerability changes, and unverified leak-site claims for the dates shown.

272 stories tracked from Monday to Sunday, Coordinated Universal Time (UTC): October 05 to October 11, 2026; -41 vs prior week; 5 Cybersecurity and Infrastructure Security Agency (CISA) Known Exploited Vulnerabilities (KEV) additions from Monday to Sunday, UTC: October 05 to October 11, 2026; 306 ransomware leak-site claims observed in tracked feeds (unverified) from Monday to Sunday, UTC: October 05 to October 11, 2026

Monday to Sunday, UTC. Permalink label: 2026-W41.

272
Stories
-41 vs prior week
5
CISA KEV additions
-1 vs prior week
306
Leak-site claims
-19 vs prior week

The 272 stories above are counted by publisher date (first-seen date where it is missing or unusable), and only for stories that have a summary and a why-it-matters line and are not thin or editorially excluded. The daily archive counts by the day the tracker first saw each story and does not require a summary or a why-it-matters line: its 7 day pages for these 7 days list 440 stories. The two figures use different dates and rules, so they are not expected to match.

Most covered

Most active ransomware groups (leak-site claims, unverified)

Most active ransomware groups by leak-site claims in the week of 5 to 11 October 2026, unverified
The Gentlemen72 claims+3 vs prior week
Qilin23 claims+9 vs prior week
Nightspire22 claims+20 vs prior week
N0n18 claims+14 vs prior week
Safepay12 claims0 vs prior week
Byod10 claims+10 vs prior week
INC Ransom10 claims0 vs prior week
Umbra10 claims+10 vs prior week
Panzer9 claims+5 vs prior week
LockBit8 claims+4 vs prior week

Leak-site claim data is unverified: RansomLook (CC BY 4.0), with ransomware.live as a failover, credited and linked as its terms require (Source: Ransomware.live).

Takedowns and arrests

10 more qualifying actions on the full feed.

All takedowns and arrests

CISA KEV additions

Vulnerabilities on the move, to (the 7 days before this recap was generated)

Ransomware leak-site claims (20 of 306 shown, unverified)

Ransomware claim data is unverified: RansomLook (CC BY 4.0), with ransomware.live as a failover, credited and linked as its terms require (Source: Ransomware.live).

All leak-site claims and confirmed breaches

Glossary