*The question is if this is what the forum is, it will give a second chance to correct the mistake?
Why second chance?
Second chance is not for all. Only good posters with good net effects can be given second chances.
If a shit poster plagiarized, no second chance.
If a newbie plagiarized, no second chance I guess.
Plagiarism is what gets people permabanned, not just copying. Plagiarism is copying with the intent of passing the work off as your own. In essentially all cases, plagiarism deserves a permaban because it usually proves definitively that the person is here for the wrong reasons: to fill up space in order to get paid, not to actually discuss or contribute. If someone was able to convince us that they were plagiarizing just to eg. impress people rather than to fill up space, then a lesser ban of a few months might instead be warranted. But this has never happened AFAICR. (Arguments based on plausible deniability aren't going to work; we don't need to prove that you had the motive we see in your actions.)
Second chance
There's been no policy change. redsn0w wasn't permanently banned due to several factors which made me think that permabanning him would be a net negative for the forum. Nobody is banned strictly because of "the rules"; it's always handled case-by-case, but almost always, plagiarists deserve to be permabanned.
If you think that a ban should be ended, make your case in a new topic from a "good for the forum as a whole" perspective.
https://bitcointalksearch.org/topic/m.47256371Second chances can be given and you can argue that the punishment is harsh, but at the moment the rules are pretty clear that if you're caught plagiarising then it's a permaban. Once we start making exceptions for people it just opens up a huge can of worms and then everyone else who's had a ban will come out of the woodwork and complain it's not fair to them and people who are banned in the future will use this case as an example why they should be given another chance.
PM theymos or cyrus and make your case to them and maybe they will remove it. I'm not against second chances but there needs to be some consistency so it's fair to all. Hopefully signature bans could be issued in cases like this instead and people can keep their accounts, but at the moment I just wish people would stop plagiarising content so these bans aren't even needed in the first place and it's truly a sad state of affairs that they are.