Breaches and Incidents

What happened, why it matters, and what to do about it: incident analysis without the press-release rewrite.

Editorial illustration for the briefing: AWS quarantines a leaked access key in 10 seconds, but the key keeps working for anything not on the deny list

Breaches and Incidents21 Sept 2026

AWS quarantines a leaked access key in 10 seconds, but the key keeps working for anything not on the deny list

AWS's AWSCompromisedKeyQuarantineV3 went on 10 seconds after a test leak. It is a deny list, not a lockdown: what it blocks, what it leaves open, and what you still have to do.

Editorial illustration for the briefing: September Windows updates quietly stop File History backups; Entra's 1 February SMS cut-off has no opt-out

Breaches and Incidents21 Sept 2026

September Windows updates quietly stop File History backups; Entra's 1 February SMS cut-off has no opt-out

File History can stop backing up after September's Windows updates, mostly without a true error. Entra ID retires Microsoft-provided SMS and voice on 1 February 2027. What Microsoft requires, what it only recommends, and what to do.

A wall of screenshot thumbnails and metadata fragments interrupted by a broken digital lock.

Breaches and Incidents20 Sept 2026

Gyazo exposed about 492.4 million image records. Its notice cannot rule out private-image viewing

Gyazo confirmed exceptional metadata exposure and a list of private image files. The disclosed fields can reconstruct the context around screenshots and drive secondary compromise.

Breaches and Incidents18 Sept 2026

Brevo's attacker hostname sat in a public certificate log for 19 days before the ClickFix injection

A stolen Cloudflare key let an attacker rewrite Brevo's embedded scripts at the CDN edge, so origin files and their timestamps never changed. The earliest public evidence was a certificate logged 19 days before the injection.

A closed laptop with a steel padlock resting on it, beside keys, a circuit board, a network device and a monitor on a desk at night.

Breaches and Incidents17 Sept 2026

KB5124008 revives a dormant Credential Guard setting and breaks domain trust below Server 2025

KB5124008 makes Windows honour Machine Identity Isolation settings dormant since April 2025, breaking domain trust below Server 2025 level. What Microsoft says, what it does not, and the safe order of work.

AI-generated identity-security scene of one access badge opening several tenant mail compartments beside a mail conveyor.

Breaches and Incidents13 Sept 2026

Brevo’s SAML flaw crossed 138 customer accounts. Six sent phishing through legitimate infrastructure.

A Brevo SAML scoping failure let one organisation’s identity assertion cross into other customer accounts.

AI-generated conceptual airport illustration: waiting aircraft beneath a network of teal and amber routes; not a photograph of the incident.

Breaches and Incidents9 Sept 2026

NATS fixed the flight-processing system. The airport disruption kept moving.

The system was restored on 8 September. The aviation network still had a backlog to clear. A sourced timeline and worked recovery example explain the gap.

An antique brass wax seal stamp on its side beside a set pool of deep red sealing wax, both blank, on a dark surface lit by a cold indigo rim light.

Breaches and Incidents1 Sept 2026

Hundreds of fraudulent Pix transactions, and nothing was forged. The only sum Google names is tens of thousands.

Google reports Breeze Comet running two waves of fraudulent transactions through Brazilian payment systems. The count is a victim’s, the only money figure is in a different section, and no rail validates intent.

An airport car park barrier arm raised at night beside a weathered number plate recognition camera on its post, wet tarmac below, captioned two 72-hour clocks, only one of them started, and 8.7 million customers

Breaches and Incidents31 Aug 2026

Manchester Airports breach reaches 8.7 million customers. Two 72-hour clocks applied, and only one of them ever started

Gigabytes are not people. The verified finding is one authenticated record carrying far more than MAG disclosed, and a NIS duty that never engaged.

A white electrical plug hanging loose in front of a dark wall socket, captioned: six critical flaws, NVD scored none of them. 0 of 8 identifiers independently analysed.

Breaches and Incidents30 Aug 2026

Six critical WordPress flaws in ten days. NVD independently scored none of them, and the claim that plugins cause most compromises has no current source

The 91% figure describes the vulnerability catalogue, not the cause of breaches. The only quantified entry-vector number anyone can cite is a 2016 survey of about 222 sites.

A brass mechanical counter drum caught mid-rotation in deep shadow, captioned: the fix went public, the chains heard last. 20 hours 5 minutes from that release to the first drain.

Breaches and Incidents30 Aug 2026

Cosmos Labs published the security fix 28 hours before it warned the chains. Six networks were drained of about $5.7 million

Cosmos Labs' own policy calls for private distribution before public disclosure on a network-wide risk. The advisory also never reached the global GitHub database, so no dependency scanner ever raised it.

A long blank unprinted paper roll coiling away into darkness, captioned: 284 million records, not 284 million people. 14.9% of revenue, in the units named.

Breaches and Incidents30 Aug 2026

ShinyHunters claims 284 million McKesson records. It is a row count, and the units McKesson named are 14.9% of the business

Every technical detail of this intrusion is single-sourced to the attackers. The one number McKesson has published points the other way.

An empty meeting room at night with chairs pulled back and a cyan-lit screen casting light across a dark table

Breaches and Incidents5 Aug 2026

Breaches and Incidents

AWS quarantines a leaked access key in 10 seconds, but the key keeps working for anything not on the deny list

September Windows updates quietly stop File History backups; Entra's 1 February SMS cut-off has no opt-out

Gyazo exposed about 492.4 million image records. Its notice cannot rule out private-image viewing

Brevo's attacker hostname sat in a public certificate log for 19 days before the ClickFix injection

KB5124008 revives a dormant Credential Guard setting and breaks domain trust below Server 2025

Brevo’s SAML flaw crossed 138 customer accounts. Six sent phishing through legitimate infrastructure.

NATS fixed the flight-processing system. The airport disruption kept moving.

Hundreds of fraudulent Pix transactions, and nothing was forged. The only sum Google names is tens of thousands.

Manchester Airports breach reaches 8.7 million customers. Two 72-hour clocks applied, and only one of them ever started

Six critical WordPress flaws in ten days. NVD independently scored none of them, and the claim that plugins cause most compromises has no current source

Cosmos Labs published the security fix 28 hours before it warned the chains. Six networks were drained of about $5.7 million

ShinyHunters claims 284 million McKesson records. It is a row count, and the units McKesson named are 14.9% of the business

Run a ransomware tabletop yourself

Ransomware playbooks keep failing at the same step: recovery

Half of breaches now involve a third party. Every clock starts too late