Implementing BAN

[pmitchev]

There is possible network attack in which malicious nodes can make syncing practically impossible. The attack is super easy and cheap to implement and can make the network practically useless for less than 1000$ per month. Please implement BAN nodes returning incorrect blocks as soon as possible.

[bcndev]

@pmitchev Thanks for highlighting such security aspects that must be really taken seriously. We are working on that.

[ghost]

@bcndev In what version will you have it implemented? Thank you!