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.

How to Install

1. Choose your Installer Language and click OK.

install psi 1

2. At Welcome screen, click Next button.

install psi 2

3. Read and Accept the agreement. Click Next to continue.

install psi 3

4. Just leave the defaults settings (in my case, i choose the third one) and click Next button (you can change this setting later).

install psi 4

5. Click Finish to close setup.

install psi 5

Launch the Scanner

6. To launch the scanner, click Yes.

install psi 6

7. Click Scan Now button to run the scanner.

install psi 7

8. Wait until finish.

install psi 8

9. Now, you will see the list of programs that needed to update.

install psi 9


install psi 9_2

10. To start update, just click “Click to Update”.

click to update

11. The downloading updates in progress.

update progress

Change Update Setting

12. To change the update setting, click on Setting icon > Update Handling. You can choose:

a. Update (recommended) – this option will automatic update and install the new software
b. Download, let me update – this option will automatic update the new software but you can manully choose whether to install or not.
c. Notify (not recommended) – this option will only notify you. You need to download and install the latest software manually.

change update setting

Download History

13. To view the history of update activity and status, just click on History icon.


14. To delete the history, click on Delete History icon.

view download history


15. After you update all the application, you can re-scan by click on Scan Again button.

scan again