1. Physical Layer (Layer 1)
Keystroke Logging
Lockpicking
Cutting (Cable Disconnect)

2. Data Link Layer (Layer 2)
Packet Sniffing
MAC Address Spoofing
ARP Cache Poisoning and Flooding (MITM)
WEP Cracking
VLAN Attack

3. Network Layer (Layer 3)
Ping Flood (ICMP Flood)
Fingerprinting
Port Knocking
IPSec Attack

4.Transport Layer (Layer 4)
TCP Flooding
UDP Flooding

5.Session Layer (Layer 5)
Session Hijacking
NetBIOS user enumeration
DNS Poisoning
L2TP Attack
Attack on the Session Description Protocol (SDP)
Attack on the Session Initiation Protocl (SIP)

6.Presentation Layer (Layer 6)
SSL MITM
SSL DoS
SMB Attack
Kerveros Service Attack

7.Application Layer (Layer 7)
BufferOverflow
SQLi, RFI, LFI
HTTP DoS
APPS Auth BruteForce

8. Layer n-ty 🙂
Social Engineering!