In March, Poland-based Security Explorations reported identifying nearly 20 vulnerabilities in the latest version of Oracle Java Card (version 3.1), including weaknesses that can be exploited to compromise the security of chips using this technology. The firm has continued analyzing the software and it now claims to have found 34 issues.

Java Card technology is designed to provide a secure environment for applications running on smart cards, SIM cards and other trusted devices that have limited memory and processing capabilities. Oracle says the technology is deployed on nearly six billion devices every year, including in the financial, telecoms, and government sectors.