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"It was hacked. We have been working with Twitter to get it fixed."Assuming that is the case, what could have gone wrong? Well, the most likely cause of Shkreli's Twitter account to be hacked would be that he was careless with his password. Either he chose a dumb, easy-to-crack password, or reused the same password in multiple places, or he had his password grabbed through a phishing attack or malware on his computer. In all of these scenarios, sensible best practices and up-to-date security software can prevent an online account from being compromised - but there is an additional level of security which Twitter users can deploy to prevent their accounts from being hijacked. Twitter's Login Verifications feature allows users to go beyond a simple combination of username and password, and instead have a two-step check of their identity. With Login Verifications enabled, users are prompted to confirm their identity via the official iOS and Android app. The idea is that a hacker may have grabbed your password or deduced it, but they won't (hopefully) have your smartphone. And without that final verification step, the password won't be enough to grant them access to your account. Here's a video from Twitter showing Login Verifications in action: https://www.youtube.com/watch?v=IsdvJI0AK5M&rel=0 Login verification can be enabled through the Settings section of your Twitter account. There are possibly many lessons that can be learnt by business people from the chequered career of Martin Shkreli, but perhaps one that is not tangled in controversy is the need for better security over social media accounts. If you care about your personal image and corporation's brand, make sure that your social networking accounts are properly secured - and not at risk of being hijacked by hackers. Image source: Martin Shkreli's Twitter account. Editor’s Note: The opinions expressed in this guest author article are solely those of the contributor, and do not necessarily reflect those of Tripwire, Inc.