Tier 0
Opportunistic / commodity
Resources / capability
Minimal — automated scanning, known exploits, reused credentials from public dumps. No targeting; whoever's exposed gets hit.
Typical targets
Anyone with an exposed surface. Mid-market without basic hygiene gets selected for them automatically.
Most relevant defenses
- MFA
- EDR
- email security
- patching / exposure basics
- backup
Note · Most attacks worldwide are this — the baseline most orgs need to defend against first.
Tier 1
Commodity ransomware / RaaS affiliates
Resources / capability
Moderate — purchased initial access from access brokers, RaaS kits with playbooks. Some targeting (sector preference, size).
Typical targets
Under-resourced mid-market — healthcare systems, school districts, manufacturing, municipalities.
Most relevant defenses
- MDR
- EDR
- identity
- backup / recovery
- exposure management
Note · The breach class that makes the news in mid-market. Recovery cost dominates the loss, not data theft.
Tier 2
Hacktivist / ideological
Resources / capability
Variable — defacement, DDoS, document leaks. Sporadic but reputation-damaging.
Typical targets
Politically or reputationally salient organizations — government, energy, controversial brands.
Most relevant defenses
- DDoS defense
- web / app security
- exposure management
- IR retainers
Note · Often spikes around news events. Not the durable threat for most orgs.
Tier 3
Organized cybercrime
Resources / capability
Well-resourced — BEC at scale, sophisticated ransomware ops, data theft for resale on dark markets.
Typical targets
Financial gain at scale. Financial services, retail, large enterprise.
Most relevant defenses
- identity / ITDR
- email / BEC defense
- DSPM / DLP
- MDR
- SIEM / SOC
Note · Where most named ransomware crews sit. Modern affiliates blur the line into nation-state TTPs.
Tier 4
Nation-state / APT
Resources / capability
Top-tier — custom tooling, stealth, espionage, pre-positioning, destructive operations. Patient.
Typical targets
Government, defense industrial base, critical infrastructure, high-value IP holders.
Most relevant defenses
- threat intelligence
- advanced detection engineering
- BAS / validation
- identity governance
- OT security
- IR retainers
Note · Most orgs are not in this threat model. If you are, you know.
Insider
Insider (malicious + negligent)
Resources / capability
Variable — legitimate access, mishandled or misused. Negligent insiders (most cases) bypass technical controls by being authorized.
Typical targets
From within — wherever the insider has access. Disgruntled departures, third-party contractors with broad permissions, careless privileged users.
Most relevant defenses
- DLP
- data access governance
- UEBA
- identity governance
- DSPM
Note · Quietly the largest class of incidents by count, dwarfed in headlines by nation-state and ransomware.