Many organizations — including quite a few Fortune 500 firms — have exposed web links that allow anyone to initiate a Zoom video conference meeting as a valid employee. These company-specific Zoom links, which include a permanent user ID number and an embedded passcode, can work indefinitely and expose an organization’s employees, customers or partners to phishing and other social engineering attacks.
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At issue is the Zoom Personal Meeting ID (PMI), which is a permanent identification number linked to your Zoom account and serves as your personal meeting room available around the clock. The PMI portion forms part of each new meeting URL created by that account, such as:
zoom.us/j/5551112222
Zoom has an option to include an encrypted passcode within a meeting invite link, which simplifies the process for attendees by eliminating the need to manually enter the passcode. Following the previous example, such a link might look something like this:
zoom.us/j/5551112222/pwd=jdjsklskldklsdksdklsdkll
Using your PMI to set up new meetings is convenient, but of course convenience often comes at the expense of security. Because the PMI remains the same for all meetings, anyone with your PMI link can join any ongoing meeting unless you have locked the meeting or activated Zoom’s Waiting Room feature.
Including an encrypted passcode in the Zoom link definitely makes it easier for attendees to join, but it might open your meetings to unwanted intruders if not handled responsibly. Particularly if that Zoom link is somehow indexed by Google or some other search engine, which happens to be the case for thousands of organizations.
Armed with one of these links, an attacker can invite others using the identity of the a ..
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