Attacks/Breaches

8/6/2009
12:20 PM
Connect Directly
Google+
LinkedIn
Twitter
RSS
E-Mail
50%
50%

Twitter Downed By Denial Of Service Attack

Following an denial of service attack on Thursday morning, Twitter is back online.

Twitter was unavailable early Thursday morning due to a denial of service attack.

In a blog post, presumably hosted on an unaffected server, Twitter co-founder Biz Stone acknowledged the attack. "Attacks such as this are malicious efforts orchestrated to disrupt and make unavailable services such as online banks, credit card payment gateways, and in this case, Twitter for intended customers or users," he said. "We are defending against this attack now and will continue to update our status blog as we continue to defend and later investigate."

A denial of service attack involves bombarding a Web site or server with more traffic than it can handle, effectively causing online gridlock. Often such attacks are distributed, meaning that multiple computers, usually compromised by malware, send data to the target site in unison.

Twitter was knocked offline about 9:15 a.m. EDT.

Pingdom, a site that tracks server uptime, indicates that Twitter was offline for about two and a half hours.

The Twitter status page says that Twitter availability has been restored. The site's last significant unplanned downtime occurred on May 30 following a software error.

According to Netcraft, Twitter runs on an Apache Web server hosted by Verio.

With the restoration of Twitter, tweets have resumed, many of them about the outage.

Denial of service attacks are relatively common. Earlier this week, Gawker Media sites were hit with a denial of service attack. And last week, AT&T blocked notorious Internet forum 4chan because, it said, the site was undergoing a denial of service attack.

Last week, Internet Systems Consortium warned that BIND 9, the most common domain name server, contained a vulnerability that could be exploited to crash the server, leading to a denial of service. The company said that the vulnerability is actively being exploited and it urged users of the software to update immediately.

InformationWeek Analytics and DarkReading.com have published an independent analysis of security outsourcing. Download the report here (registration required).

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
'Hidden Tunnels' Help Hackers Launch Financial Services Attacks
Kelly Sheridan, Staff Editor, Dark Reading,  6/20/2018
Inside a SamSam Ransomware Attack
Ajit Sancheti, CEO and Co-Founder, Preempt,  6/20/2018
Tesla Employee Steals, Sabotages Company Data
Jai Vijayan, Freelance writer,  6/19/2018
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2018-12716
PUBLISHED: 2018-06-25
The API service on Google Home and Chromecast devices before mid-July 2018 does not prevent DNS rebinding attacks from reading the scan_results JSON data, which allows remote attackers to determine the physical location of most web browsers by leveraging the presence of one of these devices on its l...
CVE-2018-12705
PUBLISHED: 2018-06-24
DIGISOL DG-BR4000NG devices have XSS via the SSID (it is validated only on the client side).
CVE-2018-12706
PUBLISHED: 2018-06-24
DIGISOL DG-BR4000NG devices have a Buffer Overflow via a long Authorization HTTP header.
CVE-2018-12714
PUBLISHED: 2018-06-24
An issue was discovered in the Linux kernel through 4.17.2. The filter parsing in kernel/trace/trace_events_filter.c could be called with no filter, which is an N=0 case when it expected at least one line to have been read, thus making the N-1 index invalid. This allows attackers to cause a denial o...
CVE-2018-12713
PUBLISHED: 2018-06-24
GIMP through 2.10.2 makes g_get_tmp_dir calls to establish temporary filenames, which may result in a filename that already exists, as demonstrated by the gimp_write_and_read_file function in app/tests/test-xcf.c. This might be leveraged by attackers to overwrite files or read file content that was ...