1.Left,until now,to odd,low-level IT staff to put right ,and seen as a concern only of date-rich industries such as banking,telecons,and air travel ,
是兩個過去分詞短語做狀語,left + seen,這兩個過去分詞的邏輯主語是句子的主語,即information protection.所以,將可以將句子看作是這樣的：
(Although information protection is) left to odd,low-level IT staff to put right until now,and (it is) seen as a concern only of date-rich industries such as banking,.,information .
2....is left to sb.= .被留給某人
be seen as a concern of sb = 被看作某人的關切/關注的事情
date-rich 不清楚是什么,但是可以把date忽略,巨資還是清楚的.
every variety = every kind,各種各樣的
3.盡管到此前為止,信息保護一直是由零散的、低層/下級IT人員來負責管理,信息保護也被認為是富裕產業(yè)如銀行業(yè)、電信業(yè)以及航空業(yè)所關心的事,但是信息保護現在已經排在各行各業(yè)的老總們的工作安排中重要事項了（排名很高）.