<s>
Account	B-General_Concept
pre-hijacking	I-General_Concept
attacks	O
are	O
a	O
class	O
of	O
security	O
exploit	O
related	O
to	O
online	O
services	O
.	O
</s>
<s>
Pre-hijacking	B-General_Concept
was	O
first	O
identified	O
as	O
a	O
class	O
of	O
vulnerabilities	O
in	O
2022	O
,	O
based	O
on	O
research	O
funded	O
by	O
Microsoft	O
's	O
Security	O
Response	O
Center	O
.	O
</s>
<s>
Vulnerable	O
services	O
included	O
Dropbox	B-Application
,	O
Instagram	B-Application
,	O
LinkedIn	B-Application
,	O
WordPress	B-Application
and	O
Zoom	B-Application
.	O
</s>
