Now, do not go off half-cocked thinking Socialists can change the world through hactivism. Learning to become a professional hacker takes a lifetime of experience. There are very few of those in the world and most of them seem to be Libertarian anarcho-capitalist types. Maybe there are a few anarcho-socialists out there; if so I do hope they get together and create a Revolutionary Hacking Group. "Malicious" hacking, such as targeting banks, could be useful, but unless it is cordinated with a wider "on the ground" movement, I fail to see the point.
I'm not sure about the usefulness of malicious hacking even "with a wider on the ground movement." I am sure, however, about the necessity of Left defenses against malicious hacking and of counter-hacking "this side of revolution." I am doubly sure of the necessity of cyber security and outright cyberwarfare ops, just as with retaliatory proletarian nuclear deterrents, "that side."
"A new centrist project does not have to repeat these mistakes. Nobody in this topic is advocating a carbon copy of the Second International (which again was only partly centrist)." (Tjis, class-struggle anarchist)
"A centrist strategy is based on patience, and building a movement or party or party-movement through deploying various instruments, which I think should include: workplace organising, housing struggles [...] and social services [...] and a range of other activities such as sports and culture. These are recruitment and retention tools that allow for a platform for political education." (Tim Cornelis, left-communist)