Conversation so far:
Did they have any clues?
probably FSB) are known to have targeted the webmail account of the murdered Russian journalist Anna Politkovskaya.
How did they target her email?
On 5 December 2005, RFIS initiated an attack against the account annapolitovskaya@US Provider1, by deploying malicious software.
Did they get into trouble for that?
CANNOTANSWER.
Did they have any murder suspects?
After the three Makhmudov brothers, Khadjikurbanov and Lom-Ali Gaitukayev were convicted in 2014.
Did they go to jail?
CANNOTANSWER.
Is there anything else interesting in the article?
In accordance with Russian law there is a 15-year statute of limitation for the "particularly grave" crime of first degree murder.
Are they close to solving it?
In May that year the case against him was discontinued because the statute of limitations had expired.

Question: Is it similar to any other cases?
Self-contained rewrite: Aside from the discontinued case against a convicted killer, how is the murder of Anna Politkovskaya similar to any other cases?