Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Attacks/Breaches

Skype: We're Not Hacked

Massive outage caused by problems with software, not with attackers, company says

Rumors of Skype's hacking are greatly exaggerated, company officials said earlier today.

EBay's popular voice over IP service, which is recovering slowly from a sign-on outage that has locked some users out for more than 24 hours, was initially thought to be a victim of a denial of service attack.

A number of bloggers noted that a Russian hacker had posted a proof of concept exploit earlier in the week on the Security Lab site. The exploit, which describes a method of overloading the Skype site by calling a certain number, was believed to have been used to crash the service.

But in its official blog, Skype moved quickly to deny the reports last night.

"The Skype system has not crashed or been victim of a cyber attack," the blog says. "We love our customers too much to let that happen. This problem occurred because of a deficiency in an algorithm within Skype networking software. This controls the interaction between the user's own Skype client and the rest of the Skype network."

Skype has been the target of attacks in the past. Last October, the service patched a major vulnerability in its MacOS edition. (See Skype Patches VOIP Vulnerability.) And in March, the service fell victim to the Stration/Warezov worm.

Many Skype users still are unable to access the service. In an update issued earlier today, however, the company continued to assert that it is not under attack.

"Neither Wednesday's planned maintenance of our web-based payment services nor any form of attack was related to the current sign-on issues in any way," the company said.

Have a comment on this story? Please click "Discuss" below. If you'd like to contact Dark Reading's editors directly, send us a message.

Tim Wilson is Editor in Chief and co-founder of Dark Reading.com, UBM Tech's online community for information security professionals. He is responsible for managing the site, assigning and editing content, and writing breaking news stories. Wilson has been recognized as one ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Oldest First  |  Newest First  |  Threaded View
Commentary
What the FedEx Logo Taught Me About Cybersecurity
Matt Shea, Head of Federal @ MixMode,  6/4/2021
Edge-DRsplash-10-edge-articles
A View From Inside a Deception
Sara Peters, Senior Editor at Dark Reading,  6/2/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win an Amazon Gift Card! Click Here
Post a Comment
Current Issue
The State of Cybersecurity Incident Response
In this report learn how enterprises are building their incident response teams and processes, how they research potential compromises, how they respond to new breaches, and what tools and processes they use to remediate problems and improve their cyber defenses for the future.
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-24360
PUBLISHED: 2021-06-14
The Yes/No Chart WordPress plugin before 1.0.12 did not sanitise its sid shortcode parameter before using it in a SQL statement, allowing medium privilege users (contributor+) to perform Blind SQL Injection attacks
CVE-2021-24382
PUBLISHED: 2021-06-14
The Smart Slider 3 Free and pro WordPress plugins before 3.5.0.9 did not sanitise the Project Name before outputting it back in the page, leading to a Stored Cross-Site Scripting issue. By default, only administrator users could access the affected functionality, limiting the exploitability of the v...
CVE-2021-24341
PUBLISHED: 2021-06-14
When deleting a date in the Xllentech English Islamic Calendar WordPress plugin before 2.6.8, the year_number and month_number POST parameters are not sanitised, escaped or validated before being used in a SQL statement, leading to SQL injection.
CVE-2021-24345
PUBLISHED: 2021-06-14
The page lists-management feature of the Sendit WP Newsletter WordPress plugin through 2.5.1, available to Administrator users does not sanitise, validate or escape the id_lista POST parameter before using it in SQL statement, therefore leading to Blind SQL Injection.
CVE-2021-24346
PUBLISHED: 2021-06-14
The Stock in & out WordPress plugin through 1.0.4 has a search functionality, the lowest accessible level to it being contributor. The srch POST parameter is not validated, sanitised or escaped before using it in the echo statement, leading to a reflected XSS issue