Hewlett-Packard came under fire earlier this month when it was revealed that it was purposefully “bricking” third-party ink cartridges in customers’ printers. Customers were unaware that such trickery was even going on until printers around the globe starting throwing up error messages at the same time on September 13th.

HP did acknowledge

Source: Hot Hardware – EFF Calls Out HP For Self-Destructing Printers, Cartridge Sabotage, Bait-And-Switch