92.8%
Attack reduction achieved by blocking tools unused by the management team
95.1%
Attack reduction achieved by allowing tools such as PowerShell to only take legitimate actions
99%
Of companies don’t use Bitsadmin, but have it enabled.
133
LOLBins in a fresh Windows 11 installation.
Compromises Should Not Lead to Successful Ransomware and Data Breaches
PHASR’s dynamic attack surface reduction hardens your environment and stops attacks before they escalate.
Security That’s Consistently Recognized Across Independent Evaluations
Top Protection. Lowest TCO AV-Comparatives 2025 EPR Test
Bitdefender achieved top breach prevention and lowest TCO and was the only vendor to block 100% of attacks during the first stage.
Best Protection. Best Performance for Business Users
Bitdefender GravityZone Endpoint Security received the AV-TEST Award 2023 for Best Protection and Best Performance in the business users category
High Threat Visibility, Minimal Noise
Bitdefender achieved 100% analytical coverage for both Linux and macOS, with zero False Positives (FPs) in both cases.
A Customers’ Choice in 2026 Gartner® Peer Insights™
Voice of the Customer for EPPs
A Visionary in the 2026 Gartner® Magic Quadrant™ for Endpoint Protection
Named a Strong Performer
in Forrester Wave 2024
EDR Platforms report
Shrinking the Attack Surface and Stopping Misuse of Legitimate Tools
Watch nowFAQ
What are Living off the Land techniques and how do they bypass detection?
System tools, such as PowerShell or Bitsadmin on Windows, to achieve goals such as lateral movement, defense evasion, privilege escalation, data exfiltration. Because these tools are legitimate, EDR tools often cannot distinguish malicious use from normal use quickly enough. GravityZone PHASR restricts each tool to only the legitimate actions each user performs, so attackers cannot use those tools for malicious purposes even if they gain access to an endpoint.
How does GravityZone PHASR identify unnecessary, risky tools?
PHASR uses threat intelligence and ML algorithms to map user‑endpoint behavior, identifying risky, unused tools for restriction without impacting productivity.
What makes GravityZone PHASR unique?
It dynamically tailors security per user, restricting risky actions instead of blocking entire applications, maintaining usability and manageability.
How can I Get PHASR?
PHASR is available as an add-on license to Bitdefender GravityZone Business Security Enterprise, MDR offerings and the GravityZone Cloud MSP Security Solutions , and as a standalone product, compatible with 3rd party EDR/XDR tools.
How is GravityZone PHASR different from static application control or hardening tools?
Static hardening tools apply the same rules to every endpoint. GravityZone PHASR generates a unique policy per user based on their actual behavior. If a user's behavior changes, PHASR updates their policy automatically. If a tool is used by some users but not others, it restricts it only for those who do not need it. This eliminates the manual exception management that makes static tools unsustainable for lean IT teams.
Does PHASR work with my existing EDR tool?
Yes. PHASR works alongside GravityZone Endpoint Detection and Response (EDR) and GravityZone Extended Detection and Response (XDR). It also supports third-party EDR tools from other vendors. PHASR reduces the attack surface that attackers exploit to evade EDR detection, making your existing EDR investment more effective.
Does GravityZone PHASR impact user productivity?
No. GravityZone PHASR applies hardening based on each user's observed behavior, so restrictions only apply to tools and actions that user does not legitimately use. Users do not experience PHASR as a change to their working environment. IT teams do not need to manage exceptions manually because it updates policies automatically as user behavior changes. In early adopter testing, organizations reported no user productivity impact after GravityZone PHASR deployment.
Proven. Unsurpassed Cybersecurity Effectiveness.
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