Susceptible (adjective)

1. Likely or prone to be affected by a particular thing.
2. Able to be influenced or affected by something.
3. Vulnerable to a particular illness or condition.

Origin:

From latin susceptibilis, from suscipere "to take up, receive".

Examples:

1. He is susceptible to colds and flu during the winter months.
2. The new technology is susceptible to hacking.
3. The old bridge was susceptible to collapse during heavy storms.
4. The child is susceptible to the influence of bad company.
5. The material is susceptible to wear and tear.