https://krakenshield.eu/knowledge/blog/Practical cybersecurity guides for SMEs, a new article every week.en-GBhttps://krakenshield.eu/knowledge/blog/ransomware-attack-what-to-do/https://krakenshield.eu/knowledge/blog/ransomware-attack-what-to-do/Tue, 13 Oct 2026 07:00:00 GMTRansomware has hit your business? The right moves hour by hour, from H+0 to H+72: isolate, report, call your insurer and the regulator, then recover safely.https://krakenshield.eu/barometer/cac40-2026/https://krakenshield.eu/barometer/cac40-2026/Sun, 11 Oct 2026 07:00:00 GMTPassive measurement of the CAC 40 corporate websites: 93% graded A or A+, 85% of domains enforce DMARC, against 34% for large French cities.https://krakenshield.eu/knowledge/blog/dmarc-spf-dkim-setup/https://krakenshield.eu/knowledge/blog/dmarc-spf-dkim-setup/Thu, 08 Oct 2026 07:00:00 GMTSPF, DKIM and DMARC explained simply: sample DNS records, a staged path to p=reject, common pitfalls, and what Gmail, Yahoo and Outlook.com now require.https://krakenshield.eu/barometer/cities-2026/https://krakenshield.eu/barometer/cities-2026/Wed, 07 Oct 2026 07:00:00 GMTPassive measurement of the websites of France’s 100 largest cities: 66% enforce no DMARC, 40% lack HSTS, 31% have a CSP.https://krakenshield.eu/nis2/https://krakenshield.eu/nis2/Tue, 06 Oct 2026 07:00:00 GMTNIS2 for small businesses: who is in scope, the 10 required measures, 24h and 72h incident reporting, fines, management liability and a 15-point checklist.https://krakenshield.eu/website-security-check/https://krakenshield.eu/website-security-check/Tue, 06 Oct 2026 07:00:00 GMTWebsite security check: SSL certificate test, A+ to F grade, HTTPS, HSTS, security headers, DMARC and cookies. A PDF report in minutes.