(malicious website blocking) is part of the Protection Module
and works after it is enabled. When attempting to go to a malicious website, Malwarebytes will block the attempt and provide an alert. Some legitimate programs on your computer have access to the Internet and that action can also trigger an IP alert. These events are stored in the "protection-log". Your firewall should be able to give you a list of such programs so you can confirm if they are legitimate. IP Protection is also designed to block incoming connections it determines to be malicious.
Information that explains IP Protection feature can be found in the Malwarebytes Anti-Malware IP Protection FAQs
What does IP Protection do?
IP Protection provides an additional layer of security for your computer, by preventing access to known malicious IP addresses and IP ranges...
What does this notification mean?
This notification means quite simply, that an IP address has been blocked. It does NOT necessarily mean you are infected, it simply means a program on your computer (e.g. your browser, IM program, P2P program etc), tried accessing a malicious IP address...
Other FAQs about IP Protection
How does it do this?
How does it inform you?
I got an alert and I wasn't even surfing, how's that happen?
I received a notification on a safe site, why?
How do I disable this?
I got an alert for an IP or website I think is safe, how can I report it?
Does the IP Protection replace my firewall?
Where do I find the IP Protection logs?
How can I add an IP so it won't be detected and can access a site I need to?[/b]
You can investigate IP addresses and gather additional information at:
If you are using peer-to-peer (P2P) file sharing
programs (i.e. Limewire, eMule, Kontiki, BitTorrent, uTorrent, BitLord, BitLord, BearShare, Azureus/Vuze, etc) or an (IM) client, be aware they can trigger alerts. Why?
Because these kind of programs are a security risk which can make your system susceptible to a smörgåsbord of malware infections
and remote attacks for several reasons to include pop-up ads and malicious Flash ads
that can lead to rogue sites where the IP address has been blocked. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. Even your Browser is susceptible to ads so just surfing the net or going to unsafe sites may trigger alerts in order to protect you.
If your friend is not using these types of programs, then I recommend further investingation.