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Free computer security
Stay secure by updating insecure programs on your computer with the Secunia PSI
The Secunia Personal Software Inspector (PSI) is a free computer security solution that identifies vulnerabilities in non-Microsoft (third-party) programs which can leave your PC open to attacks. Simply put, it scans software on your system and identifies programs in need of security updates to safeguard your PC against cybercriminals. It then supplies your computer with the necessary software security updates to keep it safe. The Secunia PSI even automates the updates for your insecure programs, making it a lot easier for you to maintain a secure PC.
Using a scanner like Secunia PSI 3.0 is complementary to antivirus software, and as a free computer security program, is essential for every home computer.
Learn more about PSI in these short videos
PSI 3.0 Walkthrough
So simple that anyone can be secure! watch this quick demonstration on how to use the PSI 3.0
Watch now (YouTube)
Tim and Dave
Short animated story about security and why Tim is happier than Dave.
Watch now (YouTube)
Technical Product Sheet
Here is the full rundown of technical specifications for PSI 3.0
Download now (PDF)
Product Sheet
Get the overview without the technical jargon - listing features in the PSI 3.0 and explaining why you need it.
Download now (PDF)
Reviews
Secunia PSI named as Security app of the week by Softpedia.
“At the moment, Secunia PSI can deliver security updates for more than 3,000 software pieces, which places it at the top of the list of security scanners.”.
Click here to read the five star review.
PCMag has reviewed the Secunia PSI 3.0.
Click here to read the full review.
Bill Mullins' Weblog
- Tech Thoughts
- Tech Thoughts
“A must have security application - Secunia PSI 3.0 final version”.
Click here to read the full review.
“Secunia PSI won't do away with the need to run a good antivirus program and firewall on your PC. But it provides a solid layer of free protection that no PC should do without”.
Secunia PSI is one of 6 Super Security Freebies. Click here to read more.
“Number one is the Secunia Personal Software Inspector, quite possibly the most useful and important free application you can have running on your Windows machine”.
Screenshots
The following screenshots of the Secunia PSI version 3.0 give you a glimpse at some of its functionality. We hope you like what you see and wish to secure your computer using the free Secunia PSI.
Scanning your PC
Unpatched Programs
History
All ok!
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The PSI is now available in the 7 following languages
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Secunia PSI awarded 5 stars editor's pick from Software.Informer
Join us to protect all PCs worldwide. Download the new Secunia PSI
The Board of Editors at Download Central.no has awarded Secunia Personal Software Inspector with the 5 out of 5 star award.
We’re very proud of that, as less than 1 % of the software listed at Download Central receive this award.
Secunia PSI has achieved ”editorial pick“ on freeware.de
Secunia PSI is awarded Best Web Tool by webhosting-search.com
