MAP20170021155 Multiple lines face cyber threat Sumario: Larger firms have kidnap and ransom policies with an extension for cyber extortion coverage in effect, but not small-to-medium sized enterprises En: Reactions. - London : Euromoney Institutional Investor PLC, 1981- = ISSN 0953-5640. - 01/06/2017 Número 6 - junio 2017 , p. 5 1. Cibernética . 2. Seguro de secuestro y extorsión . 3. Ciberriesgos .