The SNMPv2 protocol standards made several attempts to address the security issues associated with the SNMPv1 protocol, with the party-based security model SNMPv2p, the user-based security model SNMPv2u, and the community-based security model SNMPv2c.
Although these attempts were not successful in addressing the major security issues, SNMPv2 did provide several improvements over SNMPv1, especially in the area of data retrieval with the support of SNMP GETBULK operations, and SNMPv2 continued providing community-based security with SNMPv2c.