How to Build a Recurring Web Security Routine

Before you can measure improvement, you need to know where you stand. A baseline documents every asset, entry point, and known risk so future reviews have a clear reference point. Without it, recurring checks have no anchor and findings cannot be tracked over time.

• List every public-facing domain, subdomain, and IP address your organisation owns or manages.
• Inventory all web applications, APIs, and third-party integrations — include staging and development environments.
• Document the technology stack: languages, frameworks, CMS platforms, web servers, and CDN providers.
• Record which ports and protocols are intentionally exposed and which should be closed.
• Identify and document all user roles and who holds administrative privileges.
• Establish your risk appetite in writing: what severity of finding requires immediate remediation vs. scheduled fix?
• Store the baseline in version control so changes are auditable over time.

Daily tasks should be lightweight, fast, and focused on detecting active threats or sudden changes. The goal is an early-warning system that catches incidents within hours rather than weeks. Automate wherever possible so these habits survive busy periods.

• Review web server and application error logs for spikes in 4xx/5xx responses that may indicate scanning or attack activity.
• Check uptime and performance monitoring dashboards — an unexpected outage can signal a DDoS or compromise.
• Scan security alert feeds (your WAF, IDS, or SIEM) and triage any new high-severity alerts before starting other work.
• Verify that automated security scan results from overnight runs have completed successfully and review any critical findings immediately.
• Confirm that SSL/TLS certificates for all domains remain valid and are not approaching expiry (flag anything under 30 days).
• Ensure all automated backups completed successfully and that at least one recent backup is stored off-site or in a separate cloud region.

Weekly tasks go one layer deeper than daily monitoring. They catch vulnerabilities introduced by code changes, configuration drift, or newly disclosed CVEs that affect your stack. Scheduling these on a fixed day — for example, every Tuesday morning — makes them easy to track and hard to skip.

• Trigger a full automated vulnerability scan of all public-facing web assets; Sensagraph can run this on a recurring schedule and surface new findings automatically.
• Review the full access log for the past seven days and look for unusual geographic locations, user agents, or repeated failed authentication attempts.
• Check the NVD (National Vulnerability Database) or a curated CVE feed for newly published vulnerabilities affecting your framework, CMS, or server software versions.
• Audit the list of active user accounts: remove accounts belonging to former employees or contractors, and disable any accounts inactive for more than 30 days.
• Verify that all web application firewall (WAF) rules are current and that no rules have been accidentally disabled during deployments.
• Review any open security tickets or remediation tasks from previous scans and confirm progress against agreed deadlines.
• Check third-party scripts and CDN-hosted assets loaded by your site — look for unexpected version changes or new domains being called.

Monthly reviews step back from day-to-day noise and assess the overall security posture. This is the right cadence for dependency updates, policy reviews, and deeper analysis of trends spotted in weekly checks. Block two to three hours in your calendar and treat this as a non-negotiable commitment.

• Update all application dependencies, libraries, and plugins to their latest stable, patched versions — use a lockfile diff to understand what changed.
• Run a comprehensive vulnerability assessment that includes both automated scanning and a manual review of any findings flagged as false positives.
• Review and rotate API keys, service account credentials, and any shared secrets that have not been rotated in the past 90 days.
• Audit Content Security Policy (CSP), HTTP security headers, and CORS configurations for all domains; tighten any overly permissive rules.
• Check that your HTTPS configuration still meets current best practices: TLS 1.2+ only, strong cipher suites, HSTS enabled, no mixed content warnings.
• Review your data retention and logging policies to ensure logs are kept long enough for forensic investigation (typically 90–365 days depending on compliance requirements).
• Test your backup restoration process end-to-end — a backup you have never restored is an untested backup.
• Share a concise monthly security summary with technical leads and stakeholders so the wider team stays informed.

Quarterly audits are your most thorough checkpoint. They should simulate real adversarial activity, validate that your controls are actually working, and ensure your team is prepared to respond to incidents. Budget significant time — at least a full day for a small site, a full week or more for complex applications.

• Commission or conduct a penetration test focused on your most critical assets — use the output to prioritise the next quarter's remediation work.
• Perform a manual code review of any new features or significant code changes shipped in the past quarter, focusing on authentication, authorisation, and data handling.
• Review and update your incident response plan: ensure contact lists are current, escalation paths are clear, and roles are assigned.
• Run a tabletop exercise simulating a realistic incident (e.g., ransomware, data breach, account takeover) to identify gaps in your response procedures.
• Review third-party vendor and SaaS security postures — request updated security questionnaires or SOC 2 reports from critical suppliers.
• Assess your DNS configuration: check for subdomain takeover risks, verify DNSSEC where applicable, and review SPF, DKIM, and DMARC records.
• Update your asset inventory and baseline document to reflect infrastructure changes made during the quarter.
• Conduct security awareness training or a phishing simulation for all team members with access to production systems.

A routine only works if it is actually followed. Automation removes the dependency on human memory, while tracking creates accountability and surfaces trends. Use the metrics you collect to continuously improve — a routine that never evolves will slowly fall behind the threat landscape.

• Integrate automated security scanning into your CI/CD pipeline so every code deployment is checked before it reaches production.
• Use a ticketing system (Jira, GitHub Issues, Linear, etc.) to log every security finding with severity, owner, and target remediation date — never track findings in email or spreadsheets alone.
• Set up automated alerts for certificate expiry, new open ports, and changes to critical configuration files.
• Define and track key security metrics quarter over quarter: mean time to detect (MTTD), mean time to remediate (MTTR), number of critical findings, and scan coverage percentage.
• Schedule a brief retrospective at the end of each quarter to review what worked, what was skipped, and what needs to be added to the routine.
• Document exceptions formally: if a task was skipped or a finding was accepted as risk, record the justification and the person who approved it.
• Review your tooling annually to ensure your scanning and monitoring stack still covers your current technology stack and threat profile.