### Daily Briefing: Latest Developments in Indonesian Technology Companies and Startups in Southeast Asia

#### 1. Main Headline/Development
Cyberattack Targets Telkom Indonesia and Other Firms Amid Rising Digital Threats.

#### 2. Key Facts and Context
On September 12, 2025, a threat actor claimed to have leaked sensitive data from six Indonesian companies in telecom, IT services, education, and logistics. Telkom Indonesia, the country’s largest telecom provider, reportedly had 228 staff and admin accounts compromised. This follows a pattern of increasing cyberattacks in the region. Separately, on September 11, Southeast Asia’s startup funding hit a six-year low of USD $1.85 billion in the first half of 2025, driven by economic uncertainty and stricter governance. Indonesia’s digital economy remains a bright spot, with recent blockchain initiatives highlighted, including Telkom’s push for Web3 integration via its subsidiary MDI Ventures.

#### 3. Why This Matters
The cyberattack exposes vulnerabilities in Indonesia’s critical digital infrastructure, potentially disrupting services for millions and eroding trust in the telecom sector, which underpins Southeast Asia’s growing digital economy (projected to reach $130 billion by 2025). The funding dip signals investor caution, which could slow startup growth in key areas like green tech and fintech, but Indonesia’s focus on blockchain and innovation (e.g., eight startups on Forbes Asia’s 100 to Watch list) shows resilience. These events highlight the tension between rapid tech expansion and security/funding challenges in the region.

#### 4. What to Watch for Next
Monitor official responses from Telkom Indonesia and Indonesian authorities on the cyberattack’s impact and any data breach confirmations—details remain unverified and could escalate if more firms are affected. Track upcoming funding rounds or government incentives to counter the investment slump, especially with events like TECH PLANTER Indonesia 2025 approaching in early next year. Keep an eye on blockchain adoption trends, as they could boost Indonesia’s role in Indonesia Investment Authority Boosts Tech Investments Amid Southeast Asia’s Digital Growth">Southeast Asia’s digital recovery.