However , Szabo 's method of Sybil-spending protection was vulnerable to double attacks . Szabo 's method of sybilizing protection , however , was vulnerable to double attacks .
Walau bagaimanapun, kaedah Szabo untuk perlindungan perbelanjaan Sybil terdedah kepada serangan berganda. Kaedah Szabo untuk melindungi sybilizing, bagaimanapun, terdedah kepada serangan berganda.