Newsletter

The RadioCSIRT newsletter covers the week’s essential cybersecurity news: critical vulnerabilities, active campaigns, incident analysis and useful resources. Written for practitioners, it sticks to the facts and always gives its sources.

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Subscription is free and handled by Substack. Five independent editions, one per language: you can subscribe to more than one.

Using Substack is a deliberate choice. Sending several hundred messages per edition requires a sender reputation maintained over time, clean handling of unsubscribes and complaints, and a GDPR-compliant framework. That is a discipline in its own right, separate from producing the content. Handing it to a specialist platform means the mail gets delivered and your data is handled within an established framework.

What you receive

  • Technical summaries of current vulnerabilities and exploitation: CVEs, CERT and CSIRT advisories, vendor bulletins.
  • Incident and campaign analysis: TTPs, initial access, IOCs, countermeasures.
  • Governance reference points: NIST, NCSC and ANSSI frameworks, directives and good practice.
  • Actionable material: control points, prioritisation, mitigation guidance.
  • A weekly round-up of podcast episodes.
  • Full sources, in plain text, for verification and further reading.

Who it is for

CISOs, heads of CERT, CSIRT and SOC teams, security engineering and incident response teams, threat analysts, forensics and threat hunting.

How it differs from the podcast

The podcast covers the news daily, as advisories break. The newsletter offers a structured weekly view, with summaries and source links you can use in briefings and steering committees.

Frequently asked questions

Is it paid?
No, subscription is free. You can unsubscribe at any time from any message.

Can I share it?
Yes, with attribution. Some analysis links to third-party content under its own licence.

How is my data handled?
Sign-up and delivery are handled by Substack, whose privacy policy applies.

Can I suggest a topic or a source?
Yes, through the Contact page or by replying directly to a newsletter message.