00721nas a2200157   4500000000100000000000100001008004100002260000900043100001800052700002200070700001900092245009500111300001200206490000700218520033800225       2020                            d  c20201 aStoyan Mechev1 aElisaveta Staneva1 aMariyan Rachev00aCybersecurity Problems and Solutions in Operating Systems of Mobile Communications Devices  a300-3050 v473 a<p>Mobile communications devices use a variety of communication modes some of which can put those devices at great risks. This article explores weaknesses in some protocols exploited by simple Denial-of-Service attacks. The authors present also a solution to one of them, where the at-tack is executed using an ESP8266 microchip.</p>