virus
My programs are blocked by Avast Antivirus
A nice way to increment the confidence of all antivirus software is to digitally sign your code. Thawte has the cheapest well-recognized certificates starting below 100 € / year. Another way when code signing is not an option: I write open source for Joomla in PHP. After I received the first indications that Avast marked … Read more
Program made with PyInstaller now seen as a Trojan Horse by AVG
I was always getting some false positives with PyInstaller from VirusTotal. This is how I fixed it: PyInstaller comes with pre-compiled bootloader binaries for different OSs. I suggest compile them by yourself on your machine. Make sure everything is consistent on your machine. For Windows 64-bit, install Python 64-bit. Download PyInstaller 64-bit for Windows. Make … Read more
How can a virus exist in an image?
You’re correct that your OS will pick a program and ask it to open the image. The OS will not ask the program to execute the image — that would be nonsense. However, images are complex formats and often contain meta data (like the date and time when the picture was taken) and other parts … Read more
Accidentally created a virus?
Do these false positives also occur with other compilers? Yes, this is has been a common problem in the past for AutoIt as addressed in this forum post “Are my AutoIt EXEs really infected?”. In most cases including AutoIt it stems from poor heuristic practices. Since AutoIt uses the free and open UPX compressor, it … Read more