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The company immediately contacted law enforcement and launched an investigation. Four months later, Avast’s experts detected suspicious activity in the corporate network and sounded the alarm. In May 2019, unknown criminals infiltrated Avast’s internal network using a temporary VPN profile that didn’t have two-factor authentication.
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After the attack was detected, Avast promptly released an update for the utility, revoked the malicious version’s certificate, and contacted everyone affected by stage two of the attack. What’s important to mention is that the first traces of cybercriminal activity on Piriform’s servers date back to April 2017, three months before it was acquired by Avast. Experts later suggested that the Chinese group Axiom (aka APT17) was behind the attack. This malware covertly gave the attackers remote control over their victims’ devices.
Stage three: on these four devices they then installed a modified version of ShadowPad. From these 40 devices, the cybercriminals (probably manually this time) picked out the four targets of most interest to them. This way, in stage two, 40 computers were selected. Next, a script running on the command-and-control server selected devices with domain names that suggested their owners work for large IT companies. In stage one, the infected CCleaner was downloaded by more than two million users. The infected solutions were signed with valid digital certificates and hosted directly on the official CCleaner server.įurther investigation showed the attack to be sophisticated, and consisting of at least three stages.
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And as early as September, Cisco Talos and Morphisec experts found malicious code in the installers of this software.
Shortly afterward, on August 15 and 24, new versions of the product were released: CCleaner and CCleaner Cloud 1.
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In July 2017, Avast bought the British company Piriform, developer of the above-mentioned CCleaner - a popular PC optimization and maintenance solution with a total of two billion downloads (as of 2016). And while to date there’s no evidence of unscrupulous behavior on the company’s part or insecurity of its products, more than a few incidents over the years may make users wonder if Avast solutions can be trusted.
Once installed, Avast has access to huge amounts of user data. Thus, when choosing an antivirus, it’s important to pay attention to its reputation. It also has to be in constant contact with the servers to keep the databases up to date.
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To work effectively, antivirus software needs full access to the given device and its operating system (otherwise it cannot detect and neutralize viruses and other threats). A short while later, independent experts revealed that Avast browser extensions collect users’ data without their knowledge - far more than is necessary for protection.Īnd in the beginning of 2020 it was reported that Avast was sharing users’ data with its subsidiary, Jumpshot, which then sold it to large corporations. But the company’s problems in 2019 didn’t end there. That year, the company reported that its internal network had been compromised by intruders, whose goal was most likely gaining access to that selfsame CCleaner. In 2017, more than two million people downloaded a malware-infected version of CCleaner - one of the company’s solutions.Įven more unfortunate for Avast was 2019. Avast security issuesĪvast has let its users down many a time. That said, over the years Avast has had its fair share of unpleasant incidents, which make many users and experts question how safe their products really are. Independent experts rate them highly too: in the SE Labs test for Q2 2022, for instance, Avast software detected 98% of threats - only slightly worse than both Kaspersky and McAfee, which shared the top spot (100% of threats). Is Avast safe?Īvast solutions are popular with millions of users worldwide. But how safe and reliable are they? In this post we examine why some users are suspicious of Avast, and whether you can still trust this developer’s products. Now part of the multinational company Gen Digital, Avast has reputation for making effective security solutions to combat viruses and other threats.
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