When you hack a certain player, will there be a report that you hacked him in his information log? Or you stay invisible still?

yes, both if it fails or a success, you will appear on their log.

Notified:

• Successful hack for research points
• Critically successful for a planet location from their database
• Failure with counter-hack with or without research points
• Critical Failure with counter-hack of planet from your database
• Setting off a Quantum Firewall Trap

Not Notified:

• Successful hack but no research points taken (exception: setting off a QFT at the same time)
• Unsuccessful hack with no counter-hack

So your cloaking will be useless when you hack someone since they'll find you anyway and attack you? What's the point then of being a cloaker?

high cloak=higher chance of success(and crit hack thereof)

if u r gonna get alerted anyway, might as well get something out of it. Getting 10k RP and 5 planets and be alerted 100 times is better than getting 2k RP and no planet and get alerted 80 times....

Anyone who alerts for a battle tab hack is a pansie...

by alert i meant pops up on the log of the hacked person....

but by all intend and purposes, the rate of alert directly correlate to the rate of getting reported so.... both are true~