The Mandos Brief

Weekly cybersecurity market intelligence

Market pulse, proprietary signals from 9,000+ tracked products and 3,200+ vendors, and the CISO buyer take. Ten minutes, every Monday.

Three sections. Ten minutes. Every Monday.

The cybersecurity market, made readable in the time it takes to drink your coffee.

Market Pulse

The week's biggest cybersecurity funding rounds, M&A deals, and category shifts. With a "what it signals" column, so you know what each move means for your competitive landscape.

Mandos Signal

One proprietary data story per week, pulled from CybersecTools (9,000+ products tracked) and CybersecRadars (3,200+ vendors). Momentum gainers, hiring trends, category leadership shifts. Insights you cannot get anywhere else.

CISO Take

Thirteen years on the cybersecurity buyer side, translated into concrete advice on what would actually move a CISO this week and what would not.

What you get in every issue

Three sections. Built to make the cybersecurity market readable in ten minutes.

Section 1 / 3 min

Market Pulse

The week's biggest funding rounds, M&A deals, and category shifts. Each row tagged with what it signals for the competitive landscape.

Section 2 / 5 min

Mandos Signal

One proprietary data story per week from 9,000+ tracked products and 3,200+ vendors. Momentum, hiring, mindshare, category leadership. Insights you cannot get anywhere else.

Section 3 / 2 min

CISO Take

Thirteen years on the cybersecurity buyer side, translated into concrete advice on what would actually move a CISO this week and what would not.

Recent briefs

Browse the archive of past issues.

Newsletter Brief #149: FortiClient EMS Zero-Day, EU Commission 340GB Breach, LinkedIn BrowserGate
Apr 5, 2026 10 min read

Brief #149: FortiClient EMS Zero-Day, EU Commission 340GB Breach, LinkedIn BrowserGate

Fortinet patches second critical zero-day in days, TeamPCP steals 340 GB from the European Commission via Trivy, and LinkedIn secretly scans for 6,000+ browser extensions on every page load.

Newsletter Brief #148: Telnyx PyPI Supply Chain Attack, F5 BIG-IP RCE Exploited, Databricks Launches Lakewatch SIEM
Mar 29, 2026 6 min read

Brief #148: Telnyx PyPI Supply Chain Attack, F5 BIG-IP RCE Exploited, Databricks Launches Lakewatch SIEM

TeamPCP compromised the Telnyx Python SDK on PyPI using audio steganography, partnered with LAPSUS$ and a ransomware group, and turned developer tools into entry points for extortion campaigns.

Newsletter Brief #147: Trivy CanisterWorm, Stryker Wiper Attack, XBOW Hits $1B
Mar 22, 2026 10 min read

Brief #147: Trivy CanisterWorm, Stryker Wiper Attack, XBOW Hits $1B

Happy Sunday! In this week's brief: * Trivy CanisterWorm Supply Chain Attack: A self-spreading worm infected 47 npm packages using blockchain-based C2, harvesting developer tokens to automatically compromise entire package ecosystems. Time to audit those postinstall hooks. * Stryker Wiper At

Newsletter Mandos Brief Cybersecurity Newsletter
Mar 15, 2026 10 min read

Brief #146: InstallFix Targets Claude Code Users, CrackArmor Hits 12.6M Linux Servers, Armadin Launches With $190M

Happy Thursday! In this week's brief: * CrackArmor Linux Apocalypse: Nine vulnerabilities in AppArmor, hiding since 2017, let any unprivileged user escalate to root on 12.6 million enterprise Linux servers. Patch now. * AI Malware Is Real: IBM X-Force caught ransomware group Hive0163 deployi

Newsletter Brief #145: CISO Liability Hits 78%, Trump Bans Anthropic, Check Point's $150M AI Push
Mar 1, 2026 10 min read

Brief #145: CISO Liability Hits 78%, Trump Bans Anthropic, Check Point's $150M AI Push

Insider risk costs surge to $19.5M per org as shadow AI creates invisible data loss. CISA leadership in chaos during government shutdown.

Newsletter Brief #144: FortiGate AI Attack Hits 55 Countries, Password Manager Vaults Exposed, Zscaler Acquires SquareX
Feb 22, 2026 7 min read

Brief #144: FortiGate AI Attack Hits 55 Countries, Password Manager Vaults Exposed, Zscaler Acquires SquareX

WEF reports 87% of leaders flag AI as fastest-growing risk. Claroty raises $150M at $3B valuation with 2027 IPO planned.

Newsletter Brief #143: Check Point Spends $340M on Four Acquisitions in 60 Days
Feb 15, 2026 8 min read

Brief #143: Check Point Spends $340M on Four Acquisitions in 60 Days

Check Point just dropped $150 million on three Israeli startups in a single earnings call. That's on top of the $190 million Lakera AI deal two months ago.

Newsletter Brief #142: VMware ESXi Ransomware Exploit, GPT-4o Prompt Injection, Mesh Security's $12M Raise
Feb 8, 2026 8 min read

Brief #142: VMware ESXi Ransomware Exploit, GPT-4o Prompt Injection, Mesh Security's $12M Raise

77% of advanced email threats bypass Microsoft E3/E5 defenses. LLMjacking marketplace sells stolen AI access at 60% discount.

Newsletter mandos brief cybersecurity newsletter
Feb 1, 2026 7 min read

Brief #141: 65% Abandon Prevention Strategy, Gemini Calendar Injection, Nike Breach

VS Code malware installs ScreenConnect RAT with Rust fallback mechanisms. AI cybercrime subscriptions start at $30/month enabling novice attackers. Automotive security market hits $28B by 2036.

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