The best security program ever. /s
You may want to try the free version, but I would not advise purchasing the paid IMF Pro version. Not all IObit software are bad, for example, IObit Uninstaller is fairly good for some PC users.
If you run Windows 10, it already comes with a decent Antivirus for basic protection. For advanced protection, look up security software offered other trusted vendors (ie. Kaspersky, ESET, Norton). And for on-demand malware scans, look at the free versions of Malwarebytes, Zemana and Emsisoft Emergency Kit.