I'll be headed to East Asia for a couple months this summer (China, Korea, Singapore), wanted to bring my laptop
I've read pron is illegal in Korea and Singapore
You ever watch one of these border security shows? Your phone/usb/laptop is subject to a full search at the border. And that's in US and Canada, I don't want to know what they can do in Singapore. And they do search (for pron if they think you could have something that's not legal, but also work-related e-mails and document if they suspect you to work without a permit). If I were you, I'd make sure my machine is clean.
The ROK's entire broadband architecture was built on the need to meet the incessant demand for porn. If they started to enforce the law, they would have to haul everyone to the jail, including Korea's current president, who is an old hag who never married and probably flaps constantly given her aspieness.