Exam (elaborations)
PCI DSS Requirement 4 Detailed Questions and Answers
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PCI DSS Requirement 4 Detailed
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PCI DSS Requirement 4 Detailed4.1 - answer Use strong cryptography and security protocols to safeguard sensitive
cardholder data during transmission over open, public networks, including:
-only trusted keys and certificates are accepted,
-the protocol in use only supports secure versions or configurations, and
-the encryption strength is appropriate for the encryption methodology in use.
Open public network examples - answer• The Internet
• Wireless technologies, including 802.11
and Bluetooth
• Cellular technologies, for example,
Global System for Mobile
communications (GSM), Code division
multiple access (CDMA)
• General Packet Radio Service (GPRS)
• Satellite communications
4.2 - answerNever send unprotected PANs by end-user messaging technologies (for
example, e-mail, IM, SMS, chat, et cetera)
4.3 - answerEnsure that security policies and operational procedures for encrypting
transmissions of cardholder data are documented, in use, and known to all affected
parties on a continuous basis.
4 - answerEncrypt transmission of cardholder data across open, public networks
4.1.1 - answerEnsure wireless networks transmitting
cardholder data or connected to the
cardholder data environment, use industry best practices to implement strong
encryption for authentication and
transmission
4.1.1 - answerStrong cryptography for authentication and
transmission of cardholder data is required to
prevent malicious users from gaining access to
the wireless network or utilizing wireless networks to access other internal networks or
data.
4.2 - answerif an entity requests PAN via enduser
messaging technologies, the entity should provide a tool or method to protect these
PANs
using strong cryptography or render PANs unreadable before transmission.
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