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Flaws deleted keybase app kept images3/31/2023 Stealing a user's session ID lets an attacker use the web application in the victim's name. This chapter describes some particular attacks related to sessions, and security measures to protect your session data. It is done manually because that's how you find the nasty logical security problems. To keep up to date subscribe to security mailing lists, read security blogs, and make updating and security checks a habit (check the Additional Resources chapter). In order to develop secure web applications you have to keep up to date on all layers and know your enemies. In order to prevent attacks, minimize their impact and remove points of attack, first of all, you have to fully understand the attack methods in order to find the correct countermeasures. Or an attacker might be able to install a Trojan horse program or unsolicited e-mail sending software, aim at financial enrichment, or cause brand name damage by modifying company resources. The threats against web applications include user account hijacking, bypass of access control, reading or modifying sensitive data, or presenting fraudulent content. This is because web applications are relatively easy to attack, as they are simple to understand and manipulate, even by the lay person. The Gartner Group, however, estimates that 75% of attacks are at the web application layer, and found out "that out of 300 audited sites, 97% are vulnerable to attack". And it depends on all layers of a web application environment: The back-end storage, the web server, and the web application itself (and possibly other layers or applications). Security depends on the people using the framework, and sometimes on the development method. In general there is no such thing as plug-n-play security. Ruby on Rails has some clever helper methods, for example against SQL injection, so that this is hardly a problem. In fact one framework is not more secure than another: If you use it correctly, you will be able to build secure apps with many frameworks. Some of them also help you with securing the web application. Users can help keep themselves secure by applying current updates or downloading the latest Keybase software with all current security updates," the spokesman said.Web application frameworks are made to help developers build web applications. "We addressed the issue identified by the Sakura Samurai researchers on our Keybase platform in version 5.6.0 for Windows and macOS and version 5.6.1 for Linux. In a statement, a Zoom spokesman said that the company appreciates the work of the researchers and takes privacy and security "very seriously." Zoom said it has fixed the flaw in the latest versions of its software for Windows, macOS and Linux. The flaw was discovered by researchers from the group Sakura Samurai as part of a bug bounty program offered by Zoom, which acquired Keybase in May, 2020. However, it could put their security, privacy and safety at risk, especially for users living under authoritarian regimes in which apps like Keybase and Signal are increasingly relied on as a way to conduct conversations out of earshot of law enforcement or security services. The flaw in the encrypted messaging application ( CVE-2021-23827) does not expose Keybase users to remote compromise. A serious flaw in Zoom's Keybase secure chat application left copies of images contained in secure communications on Keybase users' computers after they were supposedly deleted.
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