This article originally appeared on our sister site ZDNet.
Timehop, a service that surfaces a user's past social media content, has revealed a security breach that hit the company on July 4, and resulted in a database of 21 million users hit.
As a result, the company has voided all social media authorisation tokens it held, and is alerting its users.
Around 4.7 million phone numbers were breached, alongside its usernames and email addresses. Timehop said no financial data was affected, nor social media content, and there has been no evidence of any improper account access.
"A small number of records included a name, a phone number, and an email address; a somewhat larger number included a name and phone number; a larger number included a name and an email address," the company said. "No financial data, private messages, direct messages, user photos, user social media content, social security numbers, or other private information was breached."
The intrusion began just after 2pm EST on July 4, and ended two hours and 19 minutes later when the attackers were locked out, Timehop said.
SEE: GDPR security pack: Policies to protect data and achieve compliance (Tech Pro Research)
"The breach occurred because an access credential to our cloud computing environment was compromised. That cloud computing account had not been protected by multifactor authentication," it said.
In another blog post, the company said that on December 19, admin credentials were used an by unauthorised user to log in into its cloud environment, and began reconnaissance activities over the next two days, and logged in twice more leading up to July 4.
"Once we recognised that there had been a data security incident, Timehop's CEO and COO contacted the board of directors and company technical advisors; informed federal law enforcement officials; and retained the services of a cybersecurity incident response company, a cybersecurity threat intelligence company; and a crisis communications company," Timehop said.
With the company voiding its social media tokens, users will need to reauthenticate each service to continue using Timehop.
Last week, Linux distribution Gentoo detailed how an attack on its GitHub organisation was successful.
The attack took place on June 28, and saw Gentoo unable to use GitHub for approximately five days.
Due a lack of two-factor authentication, once the attacker guessed an admin's password, the organisation was in trouble.
"The attacker gained access to a password of an organisation administrator. Evidence collected suggests a password scheme where disclosure on one site made it easy to guess passwords for unrelated web pages," the incident report said.
Gentoo now has a requirement for two-factor authentication to join its GitHub organisation.
- You've been breached: Eight steps to take within the next 48 hours (free PDF) (TechRepublic)
- Cheat sheet: Two-factor authentication (TechRepublic)
- Fitness app Polar exposed locations of spies and military personnel (ZDNet)
- How to get users on board with two-factor authentication (TechRepublic)
- The 5 best Android password managers to keep safe your passwords (Download.com)
Some would say that it is a long way from software engineering to journalism, others would correctly argue that it is a mere 10 metres according to the floor plan.During his first five years with CBS Interactive, Chris started his journalistic adventure in 2006 as the Editor of Builder AU after originally joining the company as a programmer.Leaving CBS Interactive in 2010 to follow his deep desire to study the snowdrifts and culinary delights of Canada, Chris based himself in Vancouver and paid for his new snowboarding and poutine cravings as a programmer for a lifestyle gaming startup.Chris returns to CBS in 2011 as the Editor of TechRepublic Australia determined to meld together his programming and journalistic tendencies once and for all.In his free time, Chris is often seen yelling at different operating systems for their own unique failures, avoiding the dreaded tech support calls from relatives, and conducting extensive studies of internets — he claims he once read an entire one.