Sextortion is a form of sex-themed exploitation via email where victims are coerced to give money to the scammer. Sextortion campaigns have become a large issue in the last year. These email campaigns victimize users by informing them that they are being watched on their webcams or have been infected with malware from watching porn sites. Earlier this year, we even saw samples that came with a malicious downloader attachment.

https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/qrcode-used-in-extortion-spam-campaign/