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Incident Response Plan

Incident Response Plan

Incident Response Plan

Incident Response Plan

Incident Response Plan

Incident Response Plan

Incident Response Plan

Incident Response Plan

Incident Response Plan

The NIST Framework

The NIST SP 800-61 framework defines four phases of incident response: Preparation, Detection & Analysis, Containment Eradication & Recovery, and Post-Incident Activity.

Phase 1: Preparation

Preparation determines response success. Key elements include:

incident-response-tools.yaml

tools:

siem: elastic-security

edr: crowdstrike-falcon

ticketing: jira-servicedesk

communication: slack + pagerduty

playbooks:

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\- ransomware.md

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\- data-breach.md

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\- ddos.md

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\- insider-threat.md

team:

incident_commander: rotate weekly

security_analyst: tier-1/tier-2

legal: on-call

communications: PR team

Phase 2: Detection and Analysis

Detect incidents through multiple signals:

import json

from datetime import datetime, timedelta

class IncidentDetector:

def init(self):

self.correlation_rules = []

def add_rule(self, rule):

self.correlation_rules.append(rule)

def evaluate(self, events):

alerts = []

for rule in self.correlation_rules:

matching = [e for e in events if rule"condition"]

if len(matching) >= rule["threshold"]:

alerts.append({

"rule": rule["name"],

"severity": rule["severity"],

"events": matching,

"timestamp": datetime.utcnow().isoformat()

})

return alerts

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