Incident response procedures are a predefined, documented plan that spells out exactly what to do when a security incident occurs, who is responsible, what steps to take, how to communicate, and how to recover. A well-built incident response plan follows the NIST framework with six phases: preparation (having the right tools, contacts, and runbooks ready), identification (confirming that an incident is actually occurring and assessing its scope), containment (stopping the bleeding without destroying evidence), eradication (removing the threat from your systems), recovery (restoring normal operations from clean backups and verified infrastructure), and lessons learned (documenting what happened and updating defenses). The plan includes contact trees (who to call first), escalation procedures, communication templates for customers and regulators, legal counsel contacts, and specific technical runbooks for common scenarios like credential compromise, data exfiltration, ransomware, and DDoS attacks.
When a security incident occurs, the clock is ticking. Every minute of indecision, confusion, or missteps increases the damage. Under GDPR, you have 72 hours to notify the relevant authority of a data breach. Under HIPAA, notification requirements are triggered with strict timelines. Several US states require notification within 30 to 60 days. Without a pre-built plan, these critical first hours are wasted on questions like "who should we call?" and "do we take the servers offline?" instead of executing a practiced response. The organizations that survive breaches with their reputation and finances intact are the ones that respond quickly, communicate transparently, and demonstrate they had a plan. IBM's research shows that organizations with an incident response team and regularly tested response plans save an average of $2.66 million per breach compared to those without. Having a plan is not just about technical recovery, it is about legal protection, regulatory compliance, and maintaining the trust of your customers.
Uber's response to its 2016 data breach became a cautionary tale in how not to handle an incident. Instead of following proper disclosure procedures, the company paid the attackers $100,000 through its bug bounty program to delete the stolen data and keep quiet. They concealed the breach from regulators and the public for over a year. When the breach was eventually disclosed, Uber's Chief Security Officer was fired and later criminally convicted of obstruction for covering it up. The company paid $148 million in settlements. Compare this to Cloudflare's response to the Cloudbleed vulnerability in 2017: the company identified the issue, deployed a fix within hours, published a detailed public post-mortem, and proactively notified affected customers. The transparency and speed of their response actually strengthened customer trust. The difference between these outcomes was not the severity of the incident, it was the quality of the response. Equifax's chaotic breach response in 2017, which included a broken notification website and confused communications, amplified the reputational damage far beyond what the breach itself would have caused. A practiced, documented incident response plan eliminates the chaos and replaces it with decisive action.
Every app I build includes incident response procedures by default.