1.   Although determined hackers can breach the tightest computer security, Mr Hook insists that there are precautions organisations can take to lessen the risk.

2.   A determined hacker may be able to get past that problem.

3.   A number of experts on privacy issues warned that a determined hacker could probably get into protected records.

4.   It just means that a commonly used security device is not effective in keeping out determined hackers looking for trade secrets and propriety information.