Each business faces different types of fraud and security related issues. Identification and prevention of many automated attacks are easier with use of firewalls however it can not avoid every attack.
The ability of hacking into a system is growing with the advancements in computing power. This requires smarter systems to identify organized attacks.
Sometimes when we try to prevent more fraud and improve security on our system it creates a bad user experience for a genuine user.
I am trying to focus of the fraud prevention techniques that web based businesses can use to minimize frauds related to malicious user account creation and activities at the same time retaining a genuine user experience.