A separate cable, obtained by multiple news outlets, directed embassies and consulates to vet applicants for “hostile attitudes towards our citizens, culture, government, institutions, or founding principles”

...

Applicants for student and exchange visas will now have their “entire online presence” vetted, per the cable reportedly said. If students refuse to change their accounts to “public” and “limited access to, or visibility of, online presence could be construed as an effort to evade or hide certain activity.”

Seems like a reasonable assumption to me