70
Sophistication
2022
First Seen
69
Notoriety
62
Stealth
73
Immersive Rating
76
Impact
60
Tactics Variety

HAFNIUM

Chinese group behind the 2021 Microsoft Exchange Server exploitation spree. Attacks allowed mass access to internal emails across thousands of organizations. Known for stealthy exfiltration and fast-moving campaigns.

Key behaviours to watch:

Immersive coverage includes:

R00TK1T ISC CyberTeam
40
2023
50
41
55
40
42
Salt Typhoon
95
2021
89
98
97
94
83
Sandworm Team
95
2009
86
96
96
97
89
Scattered Spider
85
2022
90
77
86
90
48
Sector 16
57
2025
41
59
51
45
66
SocGhoulish
48
2018
50
53
63
66
68
StrongPity
75
2012
50
55
42
60
70
Transparent Tribe
70
2013
65
68
45
67
64