The Conspiracy of Fire Nuclei (SPF) conducted its first wave of nearly simultaneous firebombing attacks using gas canister bombs at around 01:00 on 21 January 2008, to express solidarity with an arrested anarchist.

On 7 July, an explosion occurred outside the house of Panagiotis Chinofotis, a former Minister of Internal Affairs and decorated Admiral of the Hellenic Navy with a tenure as a former Head of the Armed Forces of Greece.

The bomb, using gunpowder in a pressure cooker, was subsequently claimed by the Conspiracy of Fire Nuclei, asserting that Chinofotis bore some of the responsibility for the murder of Alexandros Grigoropoulos,[5] the young student whose killing by police officers in December 2008 had led to the 2008 Greek riots.

On October 30 a similar device was detonated outside the Athens home of Marietta Giannakou, a prominent conservative opposition Member of the European Parliament, causing minor damage and no injuries.

The bombs attacked the offices of Greek Nationalist party Golden Dawn, causing significant damage, the home of a Pakistani community leader in Athens, causing slight damage and no injuries,[12] and a bus shelter outside a police station along Petrou Ralli Street in Athens, which had been implicated in several instances of police violence against immigrants, including the death of two Pakistanis in custody at the station.

[14] By the evening of Tuesday the 3rd of November, the police had found an extra 9 parcel bombs addressed to the Athenian embassies of Bulgaria, Chile, Germany, Mexico, Russia, Switzerland and The Netherlands.

[15] Greek authorities halted international airmail for 48 hours on 3–4 November 2010, following the mail bombings, and the police were reported to be searching for members of the SPF in relation to the attacks.

A communique appeared online signed "Conspiracy Nuclei of Fire" stated that “We dedicate the attack at the courthouse to our brothers,” targeting the court before the trial of 13 of its suspected members on January 17, 2011.

[28] In the same month two Anarchist robbers and an associate with alleged ties to The Conspiracy Cells of Fire were arrested attempting to rob a money delivery van in Thessaloniki.

[29] The two men, Yiannis Dimitrakis and Costas Sakkas attempted to rob a delivery van at Thessaloniki's AHEPA Hospital posing as a doctor and patient before being apprehended by Counter-Terrorism officers.

[31] In their published text "The Sun Still Rises", they put forward a redefinition of the concept of revolutionary "organization" as an entity consisting of many groups and individuals of various backgrounds, united through a common critique of capitalist society and a commitment to "immediate freedom" through urban guerrilla tactics.