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

Citigroup Confirms Hackers Stole Customer Data

Names, account numbers, email addresses, and contact details for more than 200,000 customers stolen in newest attack.

10 Massive Security Breaches
(click image for larger view)
Slideshow: 10 Massive Security Breaches
Citigroup on Thursday confirmed that attackers recently breached its systems, resulting in the exposure of customers' personal details.

"During routine monitoring, we recently discovered unauthorized access to Citi's Account Online," said a Citi spokesperson via email. "A limited number--roughly 1%--of Citi North America bankcard customers' account information ... was viewed." According to the company's most recent annual report, it has 21 million North American customers, meaning that approximately 210,000 customers had their details stolen during the attack.

The exposed account information included names, account numbers, email addresses, and contact details. But according to Citi, "the customer's social security number, date of birth, card expiration date, and card security code (CVV) were not compromised."

Even so, "customers affected by this incident should be on high alert for scams, phishing, and phone calls purporting to be from Citibank and their subsidiaries," said Chester Wisniewski, a senior security advisor at Sophos Canada, in a blog post.

Citi said that it's contacting affected customers, and that it's already "implemented enhanced procedures to prevent a recurrence of this type of event," although for security purposes, it declined to detail those enhancements.

Citi apparently discovered the Citi Account Online breach in May, during routine systems maintenance. But the breach didn't come to light until Citi responded to questioning by the Financial Times on Wednesday.

Citigroup is the country's third-largest bank, after Bank of America and J.P. Morgan Chase. The Citi breach follows recent attacks against Sony, which in the past two months has seen its websites breached 17 times, PBS, Honda Canada, as well as EMC's RSA division. EMC this week confirmed that attackers used stolen SecurID two-factor authentication system information to attempt to hack into the website of defense contractor Lockheed Martin, which said that it successfully repelled the attack. Other defense contractors have also reportedly been targeted by similar attacks.

How widespread are data braches? No one knows for sure. Currently, there's no national data breach law, although about 15 states do require companies to inform residents when their information may have been compromised. The resulting breach notification letters are a primary source of information for identifying when businesses have suffered data breaches.

But the House and Senate have been taking a closer look at data breach notifications, and especially the speed with which companies notify affected consumers. Last week, the House Energy & Commerce Committee Subcommittee on Commerce, Manufacturing, and Trade, asked representatives from Sony, as well as Epsilon (which was breached in March), for detailed timelines about how quickly they responded to the breach and notified affected customers.

Meanwhile, last month, a group of senators called on the Securities and Exchange Commission to begin requiring public companies to disclose all privacy or security exposures--in other words, breaches.

Now, government agencies are also getting involved. On Wednesday, the Department of Commerce's Internet Policy Task Force issued a report that called for the department to create new incentives for companies to improve their information security practices.

According to a blog post from Bret Cohen, an attorney at Hogan Lovells, such incentives "would include continuing to advocate for the adoption of a national breach notification law, facilitating the sharing of information about security breaches as they occur, and evaluating other public policy tools that can be used to promote cybersecurity best practices--such as liability protection and reducing 'cyberinsurance' premiums for companies that adopt best practices and openly share details about cyberattacks."

In this new Tech Center report, we profile five database breaches--and extract the lessons to be learned from each. Plus: A rundown of six technologies to reduce your risk. Download it here (registration required).

Comment  | 
Print  | 
More Insights
Comments
Oldest First  |  Newest First  |  Threaded View
7 Tips for Infosec Pros Considering A Lateral Career Move
Kelly Sheridan, Staff Editor, Dark Reading,  1/21/2020
For Mismanaged SOCs, The Price Is Not Right
Kelly Sheridan, Staff Editor, Dark Reading,  1/22/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
IT 2020: A Look Ahead
Are you ready for the critical changes that will occur in 2020? We've compiled editor insights from the best of our network (Dark Reading, Data Center Knowledge, InformationWeek, ITPro Today and Network Computing) to deliver to you a look at the trends, technologies, and threats that are emerging in the coming year. Download it today!
Flash Poll
How Enterprises are Attacking the Cybersecurity Problem
How Enterprises are Attacking the Cybersecurity Problem
Organizations have invested in a sweeping array of security technologies to address challenges associated with the growing number of cybersecurity attacks. However, the complexity involved in managing these technologies is emerging as a major problem. Read this report to find out what your peers biggest security challenges are and the technologies they are using to address them.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2015-3154
PUBLISHED: 2020-01-27
CRLF injection vulnerability in Zend\Mail (Zend_Mail) in Zend Framework before 1.12.12, 2.x before 2.3.8, and 2.4.x before 2.4.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the header of an email.
CVE-2019-17190
PUBLISHED: 2020-01-27
A Local Privilege Escalation issue was discovered in Avast Secure Browser 76.0.1659.101. The vulnerability is due to an insecure ACL set by the AvastBrowserUpdate.exe (which is running as NT AUTHORITY\SYSTEM) when AvastSecureBrowser.exe checks for new updates. When the update check is triggered, the...
CVE-2014-8161
PUBLISHED: 2020-01-27
PostgreSQL before 9.0.19, 9.1.x before 9.1.15, 9.2.x before 9.2.10, 9.3.x before 9.3.6, and 9.4.x before 9.4.1 allows remote authenticated users to obtain sensitive column values by triggering constraint violation and then reading the error message.
CVE-2014-9481
PUBLISHED: 2020-01-27
The Scribunto extension for MediaWiki allows remote attackers to obtain the rollback token and possibly other sensitive information via a crafted module, related to unstripping special page HTML.
CVE-2015-0241
PUBLISHED: 2020-01-27
The to_char function in PostgreSQL before 9.0.19, 9.1.x before 9.1.15, 9.2.x before 9.2.10, 9.3.x before 9.3.6, and 9.4.x before 9.4.1 allows remote authenticated users to cause a denial of service (crash) or possibly execute arbitrary code via a (1) large number of digits when processing a numeric ...