You can still download it here: http://blockland.dataorb.net/old.php
I used to play it a shit ton too just because it was more Lego-styled than Blockland and I liked some of the maps.
And there's this as well: https://www.moddb.com/games/blockland-classic-mod
A recent example of an attack like this would be to Transmission. It happened 2 days ago and millions of users use this website. The link to the Mac version was changed to one with malware.