Then, that animal even sent her a file, and asked her to open it. And she did, thrice just because it wouldn't open. The evil-doer even asked her if she executed the file, to which she replied that she did, but nothing was happening.
Unbeknownst to her, that file is a trojan horse, a malicious program that is disguised as legitimate software. What's worse, that trojan was a password-stealing program that gets its information from the local file system and sends it via e-mail to the hacker. It sends the local username and password, local IP Address, operating system information, registry startup information and the Yahoo username and password combination.
I experienced slowness when I first tried to check the computer, so I disconnected and removed any connections from the internet to prevent anything to be transmitted anymore. I rebooted twice, once in safe mode, and did various checks all throughout. So far, I haven't seen anything, or even any trace that the trojan was activated. I haven't seen any damages yet. I'm hoping though that my newly-installed firewall managed to block any transmission or execution of that trojan.
My sister is still able to use her Yahoo! username/password combination so that's good news, and a big *BLEAH* to that person with no conscience. She did lose a thousand pesos though.
To end this, I warn everyone not to accept any file that seems weird, or even send code combinations through e-mail or online messenger services even from a person you know or you think you know. Don't accept files especially if they end in *.bat, *.scr, *.pif, *.com, or *.exe.
Watch out for any of these filenames.
Protect yourself and your love ones with multiple firewalls, updated spyware and virus cleaners. Protect the innocents with information.
Blessed be.
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