Second cyberattack hits SuperValu grocery stores' payment systems

The Minnesota-based supermarket chain says technology installed after the first attack greatly reduced the severity of the second

SuperValu, the grocery store operator hit by a cyberattack in June and July, has suffered a second attack on its payment processing system, it said Monday.

The Minnesota-based company said the more recent attack involved different malware installed on the part of its computer network that processes card payments at some of its Shop 'n Save, Shoppers Food & Pharmacy and Cub Foods stores. But the company said it believes that cardholder information is largely safe.

While the second breach is no doubt embarrassing for the company, the severity of the attack was partially mitigated by technology it had deployed since the first breach, it said.

While the malware was installed at numerous stores, it only succeeded in capturing payment card data between Aug. 27 and Sept. 21 from some checkout lanes at four Cub Foods franchise locations in Hastings, Shakopee, Roseville and White Bear Lake, Minnesota.

The data included account numbers, and in some cases the expiration date, the cardholder's name and other data, but even if it was collected, SuperValu said it doesn't believe the captured data was transmitted to a third party.

SuperValu said it has launched a second investigation and that it believes it has eradicated the malware.

The first attack hit the company's payment processing network between June and July and could have resulted in the theft of account numbers, cardholder names, expiration dates and other data from payment cards at some stores in the Shop 'n Save, Shoppers Food & Pharmacy, Farm Fresh and Cub Foods chains.

On Monday, SuperValu said investigations into the first breach are continuing and it hasn't been able to find evidence that any cardholder data was stolen.

The breach is the latest in a growing number to hit payment systems at retail stores.

Martyn Williams covers mobile telecoms, Silicon Valley and general technology breaking news for The IDG News Service. Follow Martyn on Twitter at @martyn_williams. Martyn's e-mail address is

Join the CSO newsletter!

Error: Please check your email address.

Tags securitydata breachlegalSupervalucybercrime

More about IDGNews

Show Comments

Featured Whitepapers

Editor's Recommendations

Solution Centres

Stories by Martyn Williams

Latest Videos

  • 150x50

    CSO Webinar: The Human Factor - Your people are your biggest security weakness

    ​Speakers: David Lacey, Researcher and former CISO Royal Mail David Turner - Global Risk Management Expert Mark Guntrip - Group Manager, Email Protection, Proofpoint

    Play Video

  • 150x50

    CSO Webinar: Current ransomware defences are failing – but machine learning can drive a more proactive solution

    Speakers • Ty Miller, Director, Threat Intelligence • Mark Gregory, Leader, Network Engineering Research Group, RMIT • Jeff Lanza, Retired FBI Agent (USA) • Andy Solterbeck, VP Asia Pacific, Cylance • David Braue, CSO MC/Moderator What to expect: ​Hear from industry experts on the local and global ransomware threat landscape. Explore a new approach to dealing with ransomware using machine-learning techniques and by thinking about the problem in a fundamentally different way. Apply techniques for gathering insight into ransomware behaviour and find out what elements must go into a truly effective ransomware defence. Get a first-hand look at how ransomware actually works in practice, and how machine-learning techniques can pick up on its activities long before your employees do.

    Play Video

  • 150x50

    CSO Webinar: Get real about metadata to avoid a false sense of security

    Speakers: • Anthony Caruana – CSO MC and moderator • Ian Farquhar, Worldwide Virtual Security Team Lead, Gigamon • John Lindsay, Former CTO, iiNet • Skeeve Stevens, Futurist, Future Sumo • David Vaile - Vice chair of APF, Co-Convenor of the Cyberspace Law And Policy Community, UNSW Law Faculty This webinar covers: - A 101 on metadata - what it is and how to use it - Insight into a typical attack, what happens and what we would find when looking into the metadata - How to collect metadata, use this to detect attacks and get greater insight into how you can use this to protect your organisation - Learn how much raw data and metadata to retain and how long for - Get a reality check on how you're using your metadata and if this is enough to secure your organisation

    Play Video

  • 150x50

    CSO Webinar: How banking trojans work and how you can stop them

    CSO Webinar: How banking trojans work and how you can stop them Featuring: • John Baird, Director of Global Technology Production, Deutsche Bank • Samantha Macleod, GM Cyber Security, ME Bank • Sherrod DeGrippo, Director of Emerging Threats, Proofpoint (USA)

    Play Video

  • 150x50

    IDG Live Webinar:The right collaboration strategy will help your business take flight

    Speakers - Mike Harris, Engineering Services Manager, Jetstar - Christopher Johnson, IT Director APAC, 20th Century Fox - Brent Maxwell, Director of Information Systems, THE ICONIC - IDG MC/Moderator Anthony Caruana

    Play Video

More videos

Blog Posts