Virus Attack (Hero.com) by Andy Briggs
The villain Basilisk is back, and his nefarious plan to infiltrate Hero.com and take it offline has worked-leaving Toby, Pete, Lorna, and Emily as the only Downloaders left on the planet! It's up to the four friends to stop Basilisk before his computer virus completely destroys the Hero Foundation . . . but with glitchy, short-circuiting powers and some contention among their ranks, it'll be no simple task to outwit, outpace, and outplot the evil mastermind. Virus Attack is an action-packed adventure, full of even more creative and exciting powers and intricately linked to the anti-series, Villian.net.