This　study　explores　the　challenge　of　cyber　security　threats　that　e-commerce　technology　and　business　are　facing.　Technology　applications　for　e-commerce　are　attracting　attention　from　both　academia　and　industry.　It　has　made　what　was　not　possible　before　for　the　business　community　and　consumers.　But　it　did　not　come　all　alone　but　has　brought　some　challenges,　and　cyber　security　challenge　is　one　of　them.　Cyber　security　concerns　have　many　forms,　but　this　study　focuses　on　social　engineering,　denial　of　services,　malware,　and　attacks　on　personal　data.　Firms　worldwide　spend　a　lot　on　addressing　cybersecurity　issues,　which　grow　each　year.　However,　it　seems　complicated　to　overcome　the　challenge　because　the　attackers　continuously　search　for　new　vulnerabilities　in　humans,　organizations,　and　technology.　This　paper　is　based　on　the　conceptual　analysis　of　social　engineering,　denial　of　services,　malware,　and　attacks　on　personal　data.　We　argue　that　implementing　modern　technology　for　e-commerce　and　cybersecurity　issues　is　a　never-ending　game　of　cat　and　mouse.　To　reduce　risks,　reliable　technology　is　needed,　training　of　employees　and　consumer　is　necessary　for　using　the　technology,　and　a　strong　policy　and　regulation　is　needed　at　the　firm　and　governmental　level.