Glossary
BCP / DRP
The plans to keep operating during a crisis (BCP) and then to bring the systems back up afterwards (DRP).
The business continuity plan (BCP) describes how to maintain essential activities during a major incident; the disaster recovery plan (DRP) organises the return to normal of systems and data. They set the priorities, responsibilities and fallback solutions. A plan is only worth something if it is kept up to date and, above all, tested, not just written.
See also
RTO / RPOTwo recovery objectives: how long we can hold out without the service (RTO), and how much data we can lose (RPO).CERT / CSIRTA team specialised in preventing and handling cybersecurity incidents.Defence in depthStacking several independent protections, so that a single flaw is never enough to compromise everything.EncryptionMaking information unreadable without the right key, to protect its secrecy.