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a relatively simple technique, it is possible for an attacker to bring a deleted user to life by
having the attacker access data encrypted by the credentials retrieved from that user.

You, your politicians, your companies and your governments have their secrets when they
blindly trust the advertisements. Understanding the general aspects of what is a cryptographic
system and working correctly handling credentials can save your business. As important as how
big the padlock protects your secret, it is in the hands of whom your key has walked until it
reaches you and where and how you keep it. Based on the original researches Corrosive
secrecy and confidence: the paradox among bypassing cryptographic software, the loss of
privacy and information security published in Cyber Security Review Magazine and the original
article Lazarus: Data Leakage with PGP and Resurrection of the Revoked User published in
Journal of Cyber Security and Mobility. You can read the full research in author researchgate
profile.

https://www.researchgate.net/publication/310607421_Lazarus_Data_Leakage_with_PGP_and_
Resurrection_of_the_Revoked_User?_iepl%5BviewId%5D=9DIHNND8hTkc6UXT6eKXLmXm&
_iepl%5BprofilePublicationItemVariant%5D=default&_iepl%5Bcontexts%5D%5B0%5D=prfpi&_i
epl%5BtargetEntityId%5D=PB%3A310607421&_iepl%5BinteractionType%5D=publicationTitle

https://www.researchgate.net/publication/297232147_CORROSIVE_SECRECY_AND_CONFID
ENCE_THE_PARADOX_AMONG_BYPASSING_CRYPTOGRAPHIC_SOFTWARE_LOSS_OF
_PRIVACY_AND_INFORMATION_SECURITY?_iepl%5BviewId%5D=9DIHNND8hTkc6UXT6e
KXLmXm&_iepl%5BprofilePublicationItemVariant%5D=default&_iepl%5Bcontexts%5D%5B0%5
D=prfpi&_iepl%5BtargetEntityId%5D=PB%3A297232147&_iepl%5BinteractionType%5D=public
ationTitle

About the Authors:

Rodrigo Ruiz is researcher of CTI – Information Technology Center -
Renato Archer, Campinas, Brazil, also he is a member of the SDIWC (The
Society of Digital Information and Wireless Communications) have some
papers about privacy and he is co-author of Apoc@lypse: The End of
Antivirus and he is author of papers about privacy and security.
https://www.researchgate.net/profile/Rodrigo_Ruiz3

[email protected]

Rogério Winter is colonel at the Brazilian Army and head of Institutional
relations of CTI Renato Archer with more than 25 years of experience in
military operations and cybersecurity. He is master degree in Electronic
Engineering and Computation by Aeronautics Technological Institute-ITA,
also he is a member of the SDIWC (The Society of Digital Information and
Wireless Communications) and at present, one dedicates to the warfare
issues, cybernetics, command and control, and decision-making process and he is co-author of
Apoc@lypse: The End of Antivirus.

96 Cyber Warnings E-Magazine – June 2017 Edition
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