The "Synecdemus" of Hierocles, composed in ca. 527/8 AD but probably reflecting the situation in the first half of the 5th century, reports 11 cities for Old Epirus (, ): the capital Nicopolis, Dodona, Euroea, Hadrianopolis, Appon, Phoenice, Anchiasmos, Buthrotum, Photike, Corfu Island, and Ithaca Island. New Epirus, with capital at Dyrrhachium, comprised 9 cities. From 467 on, the Ionian Islands and the coasts of Epirus became subject to raids by the Vandals, who had taken over the North African provinces and established their own kingdom centred on Carthage. The Vandals notably seized Nicopolis in 474 as a bargaining chip in their negotiations with Emperor Zeno, and plundered Zakynthos, killing many of its inhabitants and ferrying off others into slavery. Epirus Nova became a battleground in the rebellions of the Ostrogoths after 479. In 517, a raid of the Getae or Antae reached Greece, including Epirus Vetus. The claim of Procopius of Caesarea in his "Secret History", that under Justinian I (r. 527–565) the entirety of the Balkan provinces was raided by barbarians every year, is considered rhetorical hyperbole by modern scholars; only a single Slavic raid to the environs of Dyrrhachium, in 548/9, has been documented. Procopius further reports that in 551, in an attempt to interdict the Byzantines' lines of communication with Italy during the Gothic War, the Ostrogoth king Totila sent his fleet to raid the shores of Epirus. In response to these raids, and to repair the damage done by two destructive earthquakes in 522, Justinian initiated a wide-ranging programme of reconstruction and re-fortification: Hadrianopolis was rebuilt, albeit in reduced extent, and renamed Justinianopolis, while Euroea was moved further inland (traditionally identified with the founding of Ioannina), while Procopius claims that no less than 36 smaller fortresses in Epirus Vetus—most of them not identifiable today—were either rebuilt or built anew.