The CyberSignal (Page 18)

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Editorial science-poster illustration of AI red teaming symbols — a magnifying lens, a chess piece, a stress-test dial, a bug icon, a shield with a red mark, and a report clipboard.

Cybersecurity 101

What Is AI Red Teaming?

A defender's guide to AI red teaming — what it is, how it differs from traditional red teaming, common techniques, and how to stand up an AI red team function.

Flat white line-art of an opened envelope linked to a mailbox with a looping arrow around a keyhole, on a teal background — Exchange CVE-2026-42897.

Vulnerabilities

Max-Severity Microsoft Exchange CVE-2026-42897 Actively Exploited by Laundry Bear

Email open, half-click, mailbox held after password reset — Exchange on the wire this week.

Flat white line-art of an AI model driving a hands-off control panel, on a deep-teal background — Unit 42's Chinese-speaking autonomous-AI cyberattack disclosure.

Artificial Intelligence (AI)

Chinese-Speaking Threat Actor Runs Autonomous AI-Model Cyberattacks — Unit 42

Three autonomous-agent events in July — Unit 42's disclosure lands this week, this time attributed to a Chinese-speaking threat actor.

Flat white line-art of a magnifying glass over a browser window holding a bug, on an emerald background — Chrome 151's AI-assisted patch release.

Vulnerabilities

Chrome 151 Ships 370 Vulnerabilities in Single Release — Thanks to AI Bug Hunting

Three hundred seventy CVEs in one release — Chrome's AI patch cadence lands this week.

Flat white line-art of a folded memo document beside a water tower, on a deep teal background — the leaked memo tying the Minnesota water attacks to Iran.

Critical Infrastructure

Leaked Memo Confirms Iran Attribution for Minnesota Water Utility Attacks

From suspected attribution to a leaked internal memo — the Minnesota water attribution firms up this week.

Flat white line-art of a silicon wafer beside an open document, on a teal background — Analog Devices semiconductor data-breach disclosure.

Data Breaches

Semiconductor Firm Analog Devices Discloses Data Breach

From wafer fab to breach notice — Analog Devices on the wire this week.

Flat white line-art of a large medical-records folder beside a sealed mailed notice, on a deep-blue background — CareCloud medical-records breach notifications.

Data Breaches

CareCloud Notifying Hundreds of Thousands After Medical Records Theft

From breach to notification — CareCloud contacts hundreds of thousands this week.

Flat white line-art of one document passing a concealed slip into a second document, on a teal background — Microsoft Copilot for Word "Word worm."

Artificial Intelligence (AI)

Microsoft Copilot for Word Can Copy Hidden Prompts Into New Documents ("Word Worm")

Hidden prompts tucked inside a Word document can be copied into the new files Microsoft Copilot for Word generates — a propagation The Register nicknames a "Word worm." A defender-focused look at the mechanism, the disclosure, and what stays unconfirmed.

Flat white line-art of a government building beside a stacked list of software components, on a teal background — CISA's SBOM baseline and open-source guidance.

Policy & Government

CISA Updates SBOM Baseline and Issues Open-Source Software Security Guidance

New baseline, new open-source guidance — CISA's supply-chain policy update lands this week.

Flat white line-art of three key-shaped drivers feeding one control panel, on a deep teal background — SilverFox's three-driver BYOVD chain and ValleyRAT.

Nation-State Cyber Threats

SilverFox Deploys 3-Driver BYOVD Chain and ValleyRAT Against Japanese Manufacturer

Three vulnerable drivers, one payload — SilverFox on the wire this week.

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