Over the past few weeks, the use of Zoom video conferencing software has exploded ever since it emerged the platform of choice to host everything from cabinet meetings to yoga classes amidst the ongoing coronavirus outbreak and work from home became the new normal.
The app has skyrocketed to 200 million daily users from an average of 10 million in December — along with a 535 percent increase in daily traffic to its download page in the last month — but it's also seen a massive uptick in Zoom's problems, all of which stem from sloppy design practices and security implementations.
Zoom may never have designed its product beyond enterprise chat initially, but with the app now being used in a myriad number of ways and by regular consumers, the company's full scope of gaffes have come into sharp focus — something it was able to avoid all this time.
But if this public scrutiny can make it a more secure product, it can only be a good thing in the long run.
Zoom's rapid sudden ascendance as a critical communications service has led to it drowning in a sea of privacy and security flaws.
But is Zoom a malware?
As the Guardian reported, some experts believe so. But no, Zoom is not malware. Rather, it's a piece of legitimate software that's, unfortunately, just full of security vulnerabilities and we're just now getting to know about it as the app was never scrutinized this thoroughly before —
To give credit where it's due, Zoom largely responded to these disclosures swiftly and transparently, and it has already patched several issues highlighted by the security community.
Besides, the company has announced a 90-day freeze on releasing new features to "better identify, address, and fix issues proactively." It also aims to conduct a comprehensive review with third-party experts and release a transparency report that details information related to law enforcement requests for data, records, or content.
Ultimately, it all boils down to this: should you be continuing to use Zoom? It would be easy to look at all of these flaws and say that people should simply stay away from Zoom. But it's not that simple.
Interestingly, for the very first time, we are witnessing different opinions from experts in the cybersecurity community. Some say it's wrong to criticize Zoom at this critical phase of time when the software is helping people do their work remotely, while others believe it's best to abandon the platform for other alternatives.
However, some also took a neutral stance, concluding that choosing Zoom totally depends upon an individual's threat model.
The fact that Zoom has designed and implemented its own encryption is a major red flag, as custom schemes don't undergo the same scrutiny and peer review as the encryption standards we all use today are subjected to.
"The most prominent security issues with Zoom surround deliberate features designed to reduce friction in meetings, which also, by design, reduce privacy or security," Citizen Lab wrote in its report.
The most important takeaway for regular users is simply to think carefully about their security and privacy needs for each call they make. Zoom's security is likely sufficient if it's just for casual conversations or to hold social events and organize lectures.
For everything else that requires sharing sensitive information, there are more secure options like self-hosted Jitsi, Signal and Wire.
Citizen Lab, which has identified a severe security issue with Zoom's Waiting Room feature, has encouraged users to use the password feature for a "higher level of confidentiality than waiting rooms."
The app has skyrocketed to 200 million daily users from an average of 10 million in December — along with a 535 percent increase in daily traffic to its download page in the last month — but it's also seen a massive uptick in Zoom's problems, all of which stem from sloppy design practices and security implementations.
Zoom may never have designed its product beyond enterprise chat initially, but with the app now being used in a myriad number of ways and by regular consumers, the company's full scope of gaffes have come into sharp focus — something it was able to avoid all this time.
But if this public scrutiny can make it a more secure product, it can only be a good thing in the long run.
A Laundry List of Issues
Zoom's rapid sudden ascendance as a critical communications service has led to it drowning in a sea of privacy and security flaws.
But is Zoom a malware?
As the Guardian reported, some experts believe so. But no, Zoom is not malware. Rather, it's a piece of legitimate software that's, unfortunately, just full of security vulnerabilities and we're just now getting to know about it as the app was never scrutinized this thoroughly before —
- Zoom's privacy policy came under criticism for making it possible to collect extensive data about its users — like videos, transcripts, and shared notes — and share it with third-parties for personal profit. On March 29, Zoom tightened its privacy policy to state that it doesn't use data from meetings for any advertising. But it does use the data when people visit its marketing websites, including its home pages zoom.us and zoom.com.
- Zoom's iOS app, like many apps using Facebook SDK, was found sending analytics data to the social network even if the user doesn't have a linked Facebook account. Later, it removed the feature.
- Zoom came under the lens for its "attendee tracking" feature, which, when enabled, lets a host check if participants are clicking away from the main Zoom window during a call. On April 2, it permanently removed the attendee attention tracker function. A host of a Zoom meeting can, likewise, read private text messages sent during the call if it's recorded locally.
- Security researcher Felix Seele found that Zoom uses a "shady" technique to install its Mac app without user interaction using "the same tricks that are being used by macOS malware," thus allowing the app to be installed without users providing final consent. On April 2, Zoom issued a fix to resolve the bug.
- Researchers discovered a flaw in Zoom's Windows app that made it vulnerable to UNC path injection' vulnerability that could allow remote attackers to steal victims' Windows login credentials and even execute arbitrary commands on their systems. A patch was issued on April 2 to address this flaw and two other bugs reported by Patrick Wardle that allows bad actors to gain root privileges and access the mic and camera on macOS, thereby allowing for a way to record Zoom meetings.
- Zoom was found using an undisclosed data mining feature that automatically matched users' names and email addresses to their LinkedIn profiles when they signed in — even if they were anonymous or using a pseudonym on their call. If another user in their meeting was subscribed to a service called LinkedIn Sales Navigator, they were able to access the LinkedIn profiles of other participants in their Zoom meetings without those users' knowledge or consent. In response, Zoom has disabled the feature.
Should You Use Zoom or Not?
To give credit where it's due, Zoom largely responded to these disclosures swiftly and transparently, and it has already patched several issues highlighted by the security community.
Besides, the company has announced a 90-day freeze on releasing new features to "better identify, address, and fix issues proactively." It also aims to conduct a comprehensive review with third-party experts and release a transparency report that details information related to law enforcement requests for data, records, or content.
Ultimately, it all boils down to this: should you be continuing to use Zoom? It would be easy to look at all of these flaws and say that people should simply stay away from Zoom. But it's not that simple.
Interestingly, for the very first time, we are witnessing different opinions from experts in the cybersecurity community. Some say it's wrong to criticize Zoom at this critical phase of time when the software is helping people do their work remotely, while others believe it's best to abandon the platform for other alternatives.
However, some also took a neutral stance, concluding that choosing Zoom totally depends upon an individual's threat model.
The fact that Zoom has designed and implemented its own encryption is a major red flag, as custom schemes don't undergo the same scrutiny and peer review as the encryption standards we all use today are subjected to.
"The most prominent security issues with Zoom surround deliberate features designed to reduce friction in meetings, which also, by design, reduce privacy or security," Citizen Lab wrote in its report.
The most important takeaway for regular users is simply to think carefully about their security and privacy needs for each call they make. Zoom's security is likely sufficient if it's just for casual conversations or to hold social events and organize lectures.
For everything else that requires sharing sensitive information, there are more secure options like self-hosted Jitsi, Signal and Wire.
Citizen Lab, which has identified a severe security issue with Zoom's Waiting Room feature, has encouraged users to use the password feature for a "higher level of confidentiality than waiting rooms."
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