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Illustration: Aïda Amer/Axios

TikTok patched multiple holes in its security at the end of 2019 that had left the video sharing app's accounts, videos and user information potentially exposed for most of the year, as detailed in a new report from cybersecurity research firm CheckPoint.

Why it matters: No personal data was found to be compromised, but this report provides some of the first in-depth details of security risks faced by TikTok — which is under the microscope as lawmakers criticize its Chinese ownership.

  • "We did prove that it was possible for a hacker to actually gain sensitive information," CheckPoint's Ekram Ahmed said, adding that the company has not yet found specific evidence of personal data breaches.

The big picture: TikTok's exposure depended on vulnerabilities in SMS text messaging that have confounded many other social media platforms and mobile services.

Details: CheckPoint found that attackers could delete a user's videos, create a video from a user's account, make private videos public, and scrape a user's sensitive information — like their email address, payment information or birthday.

  • TikTok implemented fixes for these issues within 30 days of CheckPoint alerting the app in late November, spokespeople for both companies told Axios.
“TikTok is committed to protecting user data. Like many organizations, we encourage responsible security researchers to privately disclose zero day vulnerabilities to us. Before public disclosure, CheckPoint agreed that all reported issues were patched in the latest version of our app. We hope that this successful resolution will encourage future collaboration with security researchers."
— Luke Deshotels, TikTok Security Team

Go deeper: TikTok's rise lands it in critics' crosshairs

Go deeper

Capitol review panel recommends more police, mobile fencing

Photo: Olivier Douliery/AFP via Getty Images

A panel appointed by Congress to review security measures at the Capitol is recommending several changes, including mobile fencing and a bigger Capitol police force, to safeguard the area after a riotous mob breached the building on Jan. 6.

Why it matters: Law enforcement officials have warned there could be new plots to attack the area and target lawmakers, including during a speech President Biden is expected to give to a joint session of Congress.

Financial fallout from the Texas deep freeze

Illustration: Annelise Capossela/Axios

Texas has thawed out after an Arctic freeze last month threw the state into a power crisis. But the financial turmoil from power grid shock is just starting to take shape.

Why it matters: In total, electricity companies are billions of dollars short on the post-storm payments they now owe to the state's grid operator. There's no clear path for how they will pay — something being watched closely across the country as extreme weather events become more common.

U.S. Chamber decides against political ban for Capitol insurrection

A pedestrian passes the U.S. Chamber of Commerce headquarters as it undergoes renovation. Photo: Andrew Harrer/Bloomberg via Getty Images

The U.S. Chamber of Commerce revealed Friday it won't withhold political donations from lawmakers who simply voted against certifying the presidential election results and instead decide on a case-by-case basis.

Why it matters: The Chamber is the marquee entity representing businesses and their interests in Washington. Its memo, obtained exclusively by Axios, could set the tone for businesses debating how to handle their candidate and PAC spending following the Jan. 6 Capitol attack.