QA Pro AcademyCybersecurity A-Z
Join free
← Back to catalogue
Aurelle Air Group's Operation REDEYE: browsers announce on 7 October that TrellisSign certificates are distrusted at 00:00 UTC on 29 October, giving 21 days to replace 9,400 certificates on 600 systems that the certificate tool counted as 3,100 and that were 70% renewed by hand. A departures-style board shows each certificate family cleared or still on its own clock at distrust night, a 21-day countdown, and a runway meter where 8,843 of 9,400 certificates are replaced or retired by midnight, with nothing passenger-facing broken.
CY-PRO-088Pro Level · Cryptography and PKI

Certificate Authority Distrust Crisis Response

Lead the crisis when thousands of certificates must be replaced — now.

40 hours12 chapters60 lessons433 activities12 labs

What you'll learn

  • Size and scope a certificate crisis from the organisation's own records — what was issued, where it is deployed, who owns it and which client enforces which deadline.
  • Replace certificates at crisis pace without causing the outage: triage by impact, an emergency change standard with verification and rollback, automation in canary batches, and new keys generated where they are used.
  • Recover pinned and embedded clients and suppliers in the right order, communicate truthfully to every audience, and run a deadline night from a disciplined bridge.
  • Turn the crisis into lasting crypto agility — two CAs, automation by default, a pinning policy, durable ownership and tested issuer switching — priced at the margin and accepted by the Board with its residuals.

Price:৳15,000
Sign in to get access

Sign in to enrol — you can pay by bKash or Nagad, or apply a promo code.