1. Nessus
2. Wireshark
3. Snort
4. Netcat
5. Metasploit Framework
6. Hping2
7. Kismet
8. Tcpdump
9. Cain and Abel
10. John the Ripper

Full List

1) Roll out corporate security policies
2) Deliver corporate security awareness and training
3) Run frequent information security self-assessments
4) Perform regulatory compliance self-assessments
5) Deploy corporate-wide encryption
6) Value, protect, track and manage all corporate assets
7) Test business continuity and disaster recovery planning

Via networkworld

1. Change Default Administrator Passwords (and Usernames)

2. Turn on (Compatible) WPA / WEP Encryption

3. Change the Default SSID

4. Enable MAC Address Filtering

5. Disable SSID Broadcast

6. Do Not Auto-Connect to Open Wi-Fi Networks

7. Assign Static IP Addresses to Devices

8. Enable Firewalls On Each Computer and the Router

9. Position the Router or Access Point Safely

10. Turn Off the Network During Extended Periods of Non-Use

Via compnetworking

1. Signature based desktop antivirus is an addiction, not effective security.

2. The bad guys beat us because they're agnostic and we're religious.

3. Antitrust concerns force Microsoft to weaken security.

4. Vendors are like politicians – they lie to us because we ask them to.

5. We're terrible at talking to, or understanding, those that fund us.

6. Security researchers need to grow up.

7. Security companies make more money when there are more incidents.

8. Network security is the result of a mistake, not an industry worth perpetuating.

9. Disclosure is dead.

10. Momentum will destroy us, until it doesn't.

11. We can't fail.

Via darkreading