In the course of taking the above measures and strengthening monitoring, we have detected and responded to multiple unauthorized accesses to JAXA's network since January of this year (including zero-day attacks), though no information was compromised, the statement reads.
Because the attacker used multiple unknown strains of malware, it was difficult to detect the unauthorized access, explained JAXA. Initial entry to JAXA's internal servers and computers was likely gained by exploiting a VPN vulnerability.
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