Dive Brief:

• Twitter issued an alert to some users warning them that state-sponsored hackers may have tried to obtain sensitive data from their accounts, Reuters reported.
• It was the first time Twitter had issued this type of warning.
• The notice said there was no indication the hackers obtained sensitive information from what it said were a "small group of accounts" targeted.

Dive Insight:

A nonprofit called Coldhak said it received a notice from Twitter on Friday. The notice said the attackers may have been trying to obtain information such as "email addresses, IP addresses, and/or phone numbers.”

Coldhak's Twitter account, @coldhakca, retweeted reports from a number of other users who said they also received the notice.

The companies affected did not indicate why they may have been singled out.

One of the founding directors of Coldhak said his organization has seen "no noticeable impact of this attack."

Twitter did not provide additional information about the attack or possible suspects.