Siam Commercial now (or in the past, but I didn't know about it) sends an email to you whenever anyone makes a transaction to your account or logs on to your on-line account.
I get notifications via email when I change my profile with some other US banks, but nothing like what SCB offers. A nice touch, IMO.
On-line security SCB
On-line security SCB
I get an SMS message with every transaction which is quite handy when out and about. If there was a transaction I didn't recognize I could call the bank immediately to block my card. Quite a neat security feature!