1. 2004. CVE-2004-0320. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0320. 2004. CVE-2004-0320. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0320.
2. 2015. YSA-2015-1. https://developers.yubico.com/ykneo-openpgp/SecurityAdvisory%202015-04-14.html. 2015. YSA-2015-1. https://developers.yubico.com/ykneo-openpgp/SecurityAdvisory%202015-04-14.html.
3. 2018. CVE-2018-6875. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6875. 2018. CVE-2018-6875. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6875.
4. 2018. YSA-2018-01. https://www.yubico.com/support/security-advisories/ysa-2018-01/. 2018. YSA-2018-01. https://www.yubico.com/support/security-advisories/ysa-2018-01/.
5. 2019. CVE-2019-18671. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18671. 2019. CVE-2019-18671. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18671.