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Edition of Sunday, October 25, 2026
Daily CISO

The five-minute briefing for security leaders.

2024 on Daily CISO

Everything we have on record from 2024.

52 weekly archive pages, newest first. Each page sits under the week or day it covers. Daily CISO launched on September 27, 2026; the archive pages here were compiled after that from public records, not published in 2024.

December 2024 · 5 pages

  1. Weekly archive page ·

    Week of December 30, 2024: Treasury discloses a BeyondTrust-linked breach, and OFAC sanctions Integrity Tech

    Compiled September 27, 2026 from public records

  2. Weekly archive page ·

    Week of December 23, 2024: CISA KEV Addition, LockBit Developer Charged

    Compiled October 23, 2026 from public records

  3. Weekly archive page ·

    Week of December 16, 2024: CISA Cloud Directive and BeyondTrust Zero-Day

    Compiled October 23, 2026 from public records

  4. Weekly archive page ·

    Week of December 9, 2024: Cleo Zero-Day Exploited, Krispy Kreme Discloses Cyber Incident

    Compiled October 23, 2026 from public records

  5. Weekly archive page ·

    Week of December 2, 2024: PRC Telecom Hack Guidance and ENGlobal Ransomware Disclosure

    Compiled October 23, 2026 from public records

November 2024 · 3 pages

  1. Weekly archive page ·

    Week of November 18, 2024: PAN-OS zero-days compromise 2,000 firewalls, and ransomware halts Blue Yonder

    Compiled September 27, 2026 from public records

  2. Weekly archive page ·

    Week of November 11, 2024: PRC Telecom Espionage Disclosed, KPMG Names New CISO

    Compiled October 22, 2026 from public records

  3. Weekly archive page ·

    Week of November 4, 2024: CISA KEV Additions and Election Day Cybersecurity Assurances

    Compiled October 22, 2026 from public records

October 2024 · 4 pages

  1. Weekly archive page ·

    Week of October 28, 2024: CISA's RDP Phishing Alert and Sophos's China Counter-Op

    Compiled October 22, 2026 from public records

  2. Weekly archive page ·

    Week of October 21, 2024: FortiManager Zero-Day Fallout and PRC Telecom Intrusion

    Compiled October 22, 2026 from public records

  3. Weekly archive page ·

    Week of October 14, 2024: Iranian Brute-Force Advisory and CISO Moves at OpenAI, Keeper

    Compiled October 22, 2026 from public records

  4. Weekly archive page ·

    Week of October 7, 2024: American Water discloses a cyberattack, and the FTC settles with Marriott

    Compiled September 27, 2026 from public records

September 2024 · 5 pages

  1. Weekly archive page ·

    Week of September 30, 2024: CISA Adds KEV Entries, Aembit Names New CISO

    Compiled October 22, 2026 from public records

  2. Weekly archive page ·

    Week of September 23, 2024: Ivanti KEV Addition, Telegram Data-Sharing Shift

    Compiled October 21, 2026 from public records

  3. Weekly archive page ·

    Week of September 16, 2024: CISA's FOCAL Plan and Ivanti CSA Exploitation

    Compiled October 21, 2026 from public records

  4. Weekly archive page ·

    Week of September 9, 2024: SonicWall, Ivanti flaws exploited; Microsoft patches four zero-days

    Compiled October 21, 2026 from public records

  5. Weekly archive page ·

    Week of September 2, 2024: GRU Unit 29155 Advisory and Transport for London Cyberattack

    Compiled October 22, 2026 from public records

August 2024 · 4 pages

  1. Weekly archive page ·

    Week of August 26, 2024: Volt Typhoon exploits a Versa Director zero-day, and CISA profiles RansomHub

    Compiled September 27, 2026 from public records

  2. Weekly archive page ·

    Week of August 19, 2024: CISA Expands KEV Catalog, CISO-Adjacent Moves

    Compiled October 21, 2026 from public records

  3. Weekly archive page ·

    Week of August 12, 2024: CISA Adds SolarWinds Flaw to KEV, Microsoft Ships August Patches

    Compiled October 22, 2026 from public records

  4. Weekly archive page ·

    Week of August 5, 2024: BlackSuit Ransomware Advisory and New CISO Appointments

    Compiled October 21, 2026 from public records

July 2024 · 5 pages

  1. Weekly archive page ·

    Week of July 29, 2024: VMware ESXi KEV Addition and Azure DDoS Outage

    Compiled October 21, 2026 from public records

  2. Weekly archive page ·

    Week of July 22, 2024: LA County Courts Ransomware and North Korea Espionage Advisory

    Compiled October 21, 2026 from public records

  3. Weekly archive page ·

    Week of July 15, 2024: Faulty CrowdStrike update grounds Windows fleets, and Bassett files a ransomware 8-K

    Compiled September 27, 2026 from public records

  4. Weekly archive page ·

    Week of July 8, 2024: AT&T Breach Disclosure and APT40 Advisory

    Compiled October 20, 2026 from public records

  5. Weekly archive page ·

    Week of July 1, 2024: Sonic Automotive Discloses CDK Fallout, CISA Flags Exploited Cisco Flaw

    Compiled October 19, 2026 from public records

June 2024 · 4 pages

  1. Weekly archive page ·

    Week of June 24, 2024: Indonesia Data Center Ransomware, Croatia Hospital Cyberattack

    Compiled October 20, 2026 from public records

  2. Weekly archive page ·

    Week of June 17, 2024: CISA Network Access Guidance, New CISOs at Reco and ARPA-H

    Compiled October 19, 2026 from public records

  3. Weekly archive page ·

    Week of June 10, 2024: CISA KEV Additions, Globe Life and Key Tronic Disclosures

    Compiled October 20, 2026 from public records

  4. Weekly archive page ·

    Week of June 3, 2024: Synnovis ransomware hits London hospitals, and CISA flags Snowflake account attacks

    Compiled September 27, 2026 from public records

May 2024 · 4 pages

  1. Weekly archive page ·

    Week of May 27, 2024: CISA Adds Four Exploited CVEs While CISO Moves Hit Synechron, ZeroFox

    Compiled October 19, 2026 from public records

  2. Weekly archive page ·

    Week of May 20, 2024: SEC's 30-day breach rule and the CyberArk-Venafi deal

    Compiled October 20, 2026 from public records

  3. Weekly archive page ·

    Week of May 13, 2024: CISA's Eric Goldstein Departs, KEV Catalog Expands

    Compiled October 19, 2026 from public records

  4. Weekly archive page ·

    Week of May 6, 2024: Black Basta Advisory, Key Tronic and Brandywine SEC Filings

    Compiled October 18, 2026 from public records

April 2024 · 5 pages

  1. Weekly archive page ·

    Week of April 29, 2024: Dropbox Sign Breach, CISA's Directory Traversal Alert

    Compiled October 18, 2026 from public records

  2. Weekly archive page ·

    Week of April 22, 2024: Change Healthcare theft may cover much of the US, and ArcaneDoor hits Cisco ASA

    Compiled September 27, 2026 from public records

  3. Weekly archive page ·

    Week of April 15, 2024: Frontier Breach Disclosure, Akira Ransomware Advisory

    Compiled October 18, 2026 from public records

  4. Weekly archive page ·

    Week of April 8, 2024: CISA's Midnight Blizzard Directive and a Palo Alto Zero-Day

    Compiled October 18, 2026 from public records

  5. Weekly archive page ·

    Week of April 1, 2024: Ivanti Gateway Flaws, MarineMax's Amended Breach Filing

    Compiled October 18, 2026 from public records

March 2024 · 4 pages

  1. Weekly archive page ·

    Week of March 25, 2024: XZ Utils Backdoor Surfaces as CISA Pushes New Cyber Rules

    Compiled October 16, 2026 from public records

  2. Weekly archive page ·

    Week of March 18, 2024: Volt Typhoon Warning and a Wave of Breach Disclosures

    Compiled October 16, 2026 from public records

  3. Weekly archive page ·

    Week of March 11, 2024: HHS opens a Change Healthcare HIPAA probe, and EU lawmakers pass the AI Act

    Compiled September 27, 2026 from public records

  4. Weekly archive page ·

    Week of March 4, 2024: Change Healthcare Fallout, Microsoft's Widening Breach

    Compiled October 16, 2026 from public records

February 2024 · 4 pages

  1. Weekly archive page ·

    Week of February 26, 2024: Ivanti Exploitation Warning and Cencora Breach Disclosure

    Compiled October 15, 2026 from public records

  2. Weekly archive page ·

    Week of February 19, 2024: Police seize LockBit's infrastructure, and Change Healthcare is breached

    Compiled September 27, 2026 from public records

  3. Weekly archive page ·

    Week of February 12, 2024: Prudential Discloses Breach, Fortinet Zero-Day Exploited

    Compiled October 15, 2026 from public records

  4. Weekly archive page ·

    Week of February 5, 2024: Volt Typhoon Warning, SouthState Bank Breach Disclosure

    Compiled October 15, 2026 from public records

January 2024 · 5 pages

  1. Weekly archive page ·

    Week of January 29, 2024: FBI dismantles Volt Typhoon's router botnet, and Ivanti gateways get two more flaws

    Compiled September 27, 2026 from public records

  2. Weekly archive page ·

    Week of January 22, 2024: HPE's Midnight Blizzard Breach and Tietoevry's Akira Attack

    Compiled October 20, 2026 from public records

  3. Weekly archive page ·

    Week of January 15, 2024: CISA's Ivanti Emergency Directive and Microsoft's Email Breach

    Compiled October 15, 2026 from public records

  4. Weekly archive page ·

    Week of January 8, 2024: Ivanti zero-days under active exploitation and SEC's X account hijacked

    Compiled October 15, 2026 from public records

  5. Weekly archive page ·

    Week of January 1, 2024: CISA Flags Exploited Flaws, Orrick Breach Grows to 638,000

    Compiled October 20, 2026 from public records