Remember to download from their website or another trusted mirror. I have been using driver booster for more than a year now, without any problems! So, it is safe, the program makes a backup of your current drivers before updating to the newest ones!.Some users advocate the program and they voiced on :

Well, is IObit Driver Booster safe to use? The program is controversial. The IObit company designed the program to make driver management easier on Windows easier – the program can detect outdated device drivers, find the latest driver versions online, then download and install them to update the drivers - and eventually boost the computer performance. IObit Driver Booster is developed by the IObit company, a well-reputed company that was found in 2004.

Is it safe to use? The software security is discussed in this post from MiniTool Partition Wizard. IObit Driver Booster is one such utility.

Using a driver manager to update a driver might be super easy, but some users are worried about the utility security.

Driver booster