Police CyberAlarm
Free Home Office-funded cyber threat detection tool for UK organisations
About Police CyberAlarm
Police CyberAlarm is a free, award-winning cyber threat detection and monitoring tool funded by the UK Home Office and delivered by the National Police Chiefs' Council. Members install a 'Police CyberAlarm Secure Sensor' on their network to collect and analyse firewall traffic logs, identifying suspicious and malicious activity, and can opt in to regular external vulnerability scanning. The service provides member summary threat reports and vulnerability assessments to help businesses, schools and MSPs strengthen their cyber defences while supporting police in tracking cybercriminals.
Pros & Cons
Pros
- Completely free, funded by the UK Home Office with no cost to members
- Backed and delivered by the National Police Chiefs' Council and local police forces
- Combines firewall log monitoring with optional external vulnerability scanning
- Has identified over a billion suspicious events since launch
- Dedicated onboarding paths for businesses, education and MSPs
- Privacy-conscious design that does not collect message payloads or personal content
Cons
- Only available to organisations within the United Kingdom
- Requires installing and maintaining a Secure Sensor on your network
- Not a full security suite (no firewall, antivirus or active blocking)
- Reporting is periodic rather than real-time SOC-style alerting
- Less granular control than commercial enterprise security platforms
Key Features
Network Traffic Monitoring
A virtual or physical Secure Sensor collects and processes firewall traffic logs to identify suspicious and malicious activity targeting your network.
Vulnerability Scanning
Optional regular scanning of your websites and external IP addresses to surface known vulnerabilities, complete with CVE codes, before criminals can exploit them.
Member Summary Threat Reports
Regular intelligence reports detailing the suspicious activity detected against your network to inform your security decisions.
Vulnerability Assessment Reports
Members who opt in to scanning receive straightforward reports highlighting known potential vulnerabilities and how to mitigate them.
Threat Intelligence
Insights into newly discovered threats to help keep your security measures current and ahead of emerging attacks.
Police-Backed Intelligence Sharing
Aggregated, anonymised data supports police efforts to track cyber criminals and protect communities nationwide.
MSP Multi-Client Support
Managed service providers can deploy and monitor Police CyberAlarm across client networks to strengthen their security offering.
Encrypted Data Handling
Suspicious data is encrypted before transmission to PCA servers for analysis, with no payload or personal email content collected.
Pricing
- Police CyberAlarm Secure Sensor (virtual or physical)
- Network traffic monitoring and threat detection
- Regular Member Summary Threat Reports
- Optional external vulnerability scanning
- Vulnerability Assessment Reports with CVE codes
- Threat intelligence updates
- Support from local police force
Best For
Small business cyber resilience
UK SMEs gain visibility into the malicious activity targeting their network without paying for a commercial monitoring service.
Schools and education trusts
Education providers receive threat intelligence and vulnerability reports to address the high rate of cyber incidents in the sector.
MSP security services
Managed service providers deploy Police CyberAlarm across client networks to add police-backed threat intelligence to their offering.
Vulnerability management
Organisations use monthly external scans of websites and IPs to identify and patch known vulnerabilities before they are exploited.
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