File Integrity Monitoring (FIM)
Siberson Verifim FIM
Know the instant a critical file changes. Verifim tracks unauthorized changes to files, directories, permissions and registry keys in real time — with encrypted, tamper-resistant logs that strengthen compliance and speed response.
/etc/passwd
Modified · admin
Config directory
Permissions altered
Registry key
Baseline restored
Integrity verified
Integrity is the last line of defense
When attackers or insiders tamper with critical files, configurations or registry keys, the change itself is the earliest signal. Verifim watches your critical systems continuously and proves — with encrypted, attributable logs — exactly what changed, when and by whom.
Why file integrity monitoring matters
Prevention isn't perfect. When an attacker, a rogue insider or a bad change slips through, the tell-tale sign is a file, configuration or registry key that shouldn't have changed. File Integrity Monitoring is how you catch that — and it's a named requirement in standards like PCI DSS and a core control in ISO 27001. Verifim watches your critical systems in real time and proves, with encrypted and attributable logs, exactly what changed.
Breaches leave a trace
Ransomware, web-shells and rootkits all leave a change on disk that FIM can catch.
Insider & mis-config
Not every risky change is malicious — many are human error on critical systems.
A mandated control
PCI DSS requires FIM; ISO 27001 and KVKK expect change control and audit trails.
Trust your evidence
An audit log is only useful if it can't be quietly altered after the fact.
Native OS logging
- Native logs are noisy and easily wiped
- No real-time alert on the change that matters
- No registry or permission-change coverage
- Gaps whenever the host is offline
- No trustworthy proof of who made the change
Siberson Verifim
- Real-time detection of the exact change
- Encrypted, tamper-resistant, attributable logs
- Files, folders, permissions and registry covered
- Keeps monitoring and logging while offline
- Self-protecting agent auditors can trust
From real-time detection to provable evidence
Detect change as it happens, then prove it with encrypted, attributable logs and a resilient, self-protecting agent.
Real-time change detection
Track read, write, create, delete, modify and chmod operations on files and directories as they happen.
Permissions, timestamps & names
Automatically detect changes to permissions, date/time stamps and file or directory names.
Windows registry monitoring
Watch additions, changes and deletions to Windows registry keys — a common tampering target.
Encrypted, attributable logs
Logs are compressed and encrypted, record the user behind each change, and can mask sensitive data.
Self-protecting agent
Uninstall protection, password-protected removal and CPU limiting keep the agent stable and trusted.
Central management, offline-ready
Manage policies centrally with staged version updates; agents keep working and logging offline.
Real-time file integrity, visualised
File-change events with who, what and when — in tamper-evident detail.
See Verifim FIM at work
Real-time file, folder and registry integrity — with exactly-what-changed detail.
The Verifim FIM one-pager
Capabilities, OS coverage, deployment and compliance mapping — on a single page for security and procurement teams.
- Real-time monitoring & change detection
- OS coverage — Windows, Server, Linux/Pardus
- Encrypted, tamper-resistant audit trail
- Compliance mapping — PCI DSS, ISO 27001, GDPR, KVKK
Broad OS coverage, one agent
Where teams put Verifim to work
Meet the FIM requirement
Satisfy PCI DSS file-integrity monitoring on cardholder-data systems with evidence auditors accept.
Catch malicious change early
Get alerted the instant critical files, configs or registry keys are altered by malware or an intruder.
Separate good change from bad
Baseline the trusted state and flag only unexpected changes, cutting noise for your SOC.
Protect the crown jewels
Continuously watch domain controllers, databases and OT/config servers where integrity matters most.
What sets Verifim apart
Offline-capable agent
Keeps monitoring and logging even when it can't reach the central panel — no blind spots.
Tamper-resistant by design
Encrypted logs, user attribution and self-protection make evidence trustworthy.
Broad local OS support
First-class Pardus and Linux coverage alongside Windows and registry monitoring.
Compliance-ready
Direct evidence for PCI DSS, ISO 27001 and KVKK audit requirements, managed alongside the platform.
Related articles
What Is File Integrity Monitoring (FIM) and Why It Matters
Prevention is never perfect. FIM is the early-warning control that catches the change an attacker or mistake leaves behind.
Catching Ransomware Early With File Integrity Monitoring
Ransomware announces itself through mass file change. FIM can flag it in the minutes that matter most.
FIM and PCI DSS: Meeting the File-Integrity Requirement
PCI DSS names file-integrity monitoring explicitly. Here is what assessors expect and how to satisfy it cleanly.
Trusted by Leading Organizations
Per-endpoint licensing
Licensed per monitored endpoint (agent) per year, on-premises or SaaS, with volume discounts.
Installation, training and support are available as services. As a Technology Development Zone company, Siberson is VAT-exempt. Contact us for a tailored quote based on your server and endpoint count.
Siberson Verifim FIM — questions & answers
What is File Integrity Monitoring (FIM)?
Which operating systems does Verifim support?
Does Verifim monitor in real time?
Can the agent run offline?
Does Verifim help meet PCI DSS and ISO 27001?
How is Verifim licensed?
Protect the integrity of your critical systems
Book a demo and we'll scope your critical servers and prepare a quote.
Request a Demo